I have lots of LP records. I have a Technics SL-J11OR turntable. I
have an Hp Compaq, intel inside. pentium 4 computer with Windows XP
professional hardware which allows me to burn CDs. Is my record player
compatable with my computer

First of all I must say that I never heard of a turntable (besides
some very old ones) that was not comptible.
So the simple answer is: yes, you can use your technics turntable for this purpose.

I got a rather big collection of LPs and I already transferred several
of my favorites to audio CD. I found several online tutorials
describing the procedure and necessary equipment to transfer your LP
records to CD.

Besides the things you mentioned in your question you will need:
-a phono preamp 
-a pair of RCA cables,
-depending on your soundcard a cable to connect 3.5 mm jack (sound
card) to the preampīs RCA  output
- audio recording software 

You will most certainly need a preamp:

"The problem most people encounter with a turntable is that its output
can?t be plugged directly into the line level input of any recorder.
Most turntable cartridges put out a signal on the order of just a
couple of milliVolts (mV). The turntable also can?t just be plugged
directly into the mic inputs on a mixer, recorder or computer, even
though they are setup to handle a signal with an amplitude of only a
couple of mV. The reason is that when LP vinyl records are recorded,
they have a special equalization curve (called the RIAA EQ curve)
applied to the signal. The RIAA is the Record Industry Association of
America. This special EQ curve is used to limit low frequencies and
accentuate high frequencies when the disk is made to account for the
limitations of the vinyl LP medium. Then when the LP disk is played
back, the opposite EQ curve is applied to flatten the signal out again
(i.e., accentuate the low frequencies and reduce the high
frequencies). This special EQ resides in what is known as a phono
preamplifier."
from:
(http://www.audiocourses.com/article109.html )

Preamps are available at rather low prices beginning at about $14.
If your turntable has a ground wire (almost all turntables have such a
wire) please connect it to the ground screw of you preamp.
Some authors mention to avoid to long wires (over 6 feet) from the
preamp to your PC.
Please connect to the ?line in? jack of you soundcard, not to the ?mic in? jack.

Another  very nice introduction to recording LPs with your computer
with a lot of images explaining the procedure step-by-step:
( http://www.turtlebeach.com/site/kb_ftp/1146091.asp )

Thereīs a wide variety of sound recording software available. As I do
not know if you already have a recording software please read the
hints given here:

The software application you use is a matter of choice and must be
compatible with the computer platform (PC or Mac) you have. If you
bought a decent sound card for your computer, then they usually come
bundled with some sort of sound recording program that will allow you
to record external audio from the Line In jacks and digitize it to
your hard drive. If you don?t have a sound recording application on
your computer, you can get one off of the Internet. Wave Repair has an
audio recording application that you can download as Freeware at
waverepair. Total Recorder is available at highcriteria for $12. Audio
MP3 Sound Recorder can record any audio streaming through your sound
card to your hard drive for $15 at mp3-recorder. CD Wave is available
at cdwave for $15. LP Recorder is available at cfbsoftware for $50.
For the Mac, I really like Micromat?s SoundMaker for $50 because it
also includes a powerful audio editor (micromat soundmaker).
From:
( http://www.audiocourses.com/article109.html )

You will find a comprehensive list of recording software at:
(http://www.newfreeware.com/search.php3?q=lp+recording+software )


I hope this helps to solve your problem. If anything should be unclear
please post a clarification request.

till-ga

Search strategy:
( ://www.google.de/search?sourceid=navclient&hl=de&ie=UTF-8&oe=UTF-8&q=lp+recording+computer
)

many thanks. very clear explanation

RMFSS --

Till's done an excellent job describing what's necessary.  Many of the
pre-amp products have software with them, though it's generally not as
complete as Turtle Beach software.  But the pre-amp products can be
hard to find in the U.S.  Here's a German company that has products
available worldwide (and I happen to use it too):
Terratec
"CD to Vinyl"
http://entertainen.terratec.net/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=198

I'd STRONGLY recommend USB versions of a pre-amp (as opposed to one
that connects via the sound card), as they're faster and easier to
setup.

Best regards,

Omnivorous-GA

Thanks a lot to my dear colleague omnivorous-ga for his helpful
additional information.
I was not aware of the existence of the USB connector versions.

till-ga

There is no need to purchase anything except any old system which has
a plug-in for your turntable, and an output. There is a program
available at Circuit City called MAGIX, which enables three click
turntable-to CD recording. You load the
program onto your computer, change the cache to the recommended
setting, reboot, and you are ready. Simply piggy-back the speaker
outputs with a splitter to a bnc-to-computer adapter available at any
Radio Shack. You input that to the line-in port on the back of the
computer. Don't mistake the microphone input, as you'll overdrive the
sound board.
Next access the control panel of the computer and select "line-in", at
three-quarters input level. Set your stereo to a minimum volume, call
up the Magix program, put your needle on the record, and click on
"record". You should see a volume output monitor...adjust the levels
to just exceed the peak red indication. Too much in the red produces
distortion.
Try several levels before you go after a whole project, to familiarize
yourself with the end results. I recorded Santa Ismarelda's "Don't let
me be misunderstood" as a first project. I still play the cd. It is
spotless.
A few notes about Magix. You can adjust the quality of the recording
with an equalizer, making it very pleasing to YOUR ear.
In one click, you can remove all scratches, all hiss, all pops.
Noise reduction is problematic, because as it removes noise, it
produces a boxy speaker effect. Leave noise and hiss settings at or
near zero. Conversely, too much scratch and pop removal produces
distortion. Set both of those just below max for best results.  The
program knows when a track ends, and automatically divides lp tracks.
It allows you to name them, as well as the cd. It also stops recording
at the end of an LP side, so you can drop the needle and go do other
pressing stuff, like eating.
Make sure the track markers are okay, sampling the end and start of
each track. You can remove dead space at the end of each track with a
really cool edit tool. You can cut out bad spots in records, and
extend cool passages.
One final note. Save each project to hard drive BEFORE the burning
phase (this is an option it allows you to make). Your computer may or
may not have a baud rate (wonk word for it's too freaking slow) for it
to make equal time with the program, resulting in ruined discs. 20/20
hindsight, folks.
You can use the program's burn function easily. If you have Easy CD
creator on your computer though, disable it before you start; it
believes it should boot up every time you attempt any audio project.
Very bossy, and overrides at times.
Finally, there are remaster officianados out there, and many trade their stuff. 
So happy burning, and don't sell your records until you've tried MAGIX.
In a word, it IS MAGIC to use.

If using a win95-XP computer, here is freeware which does a good job:

HarddiskOgg
http://www.fridgesoft.de/harddiskogg.php
Record using the line-in on your sound card. Record as an MP3 file.

CDex v1.51
http://cdexos.sourceforge.net/
Record using the line-in on your soundcard. Convert the resulting WAV
file to an MP3 file. "Rip" an audio cd to MP3 files. Auto-naming of CD
audio files using CDDB look-up on internet.

mp3DirectCut v1.36
http://www.mpesch3.de/
Trim your mp3 recordings. Fade files in/out. Divide LP sides into separate tracks.

MP3 CD Doctor
http://www.mp3surgeon.com/doctor.php
Burn an audio cd from WAV or MP3 files. Uses track-at-once recording,
placing 2 seconds between tracks. MP3 files must be 128kbps quality or
better.

There's other freeware, but I use this most often.
I don't worry about the "loss of quality" in using MP3s.
Those who do $pend on a new computer and commercial applications.
Their choice.