why can`t i get this web site on my computer when i can on other computers.

www.sanchezartcenter.org

It might help if you were to tell us what error you were getting.
Is it a 404 error?  (can't find it?)
403 Forbidden? etc etc.

Can you go to both computers and bring up a command prompt and try to 
use the ping utility (type "ping www.sanchezartcenter.org")
Do both ip addresses (the numeric value that is shown?)
Have you played with your hosts files?
Were you ever able to get to the site from the other computer?
Have you changed anything recently on the bad computer?
Are both computers (the one that works and the one that doesn't) 
both on the same network? Subnet?

Sorry 
the line:
Do both ip addresses (the numeric value that is shown?)
should be
Do both ip addresses (the numeric value that is shown?) MATCH EACH OTHER?

Are all the computers you have tried using the same ISP and the same proxy server?

Sometimes one proxy server can get blocked ...

Another thing to try is checking the hosts file on the computer that
cannot access that website.  I don't know how that site would have
gotten in the hosts file, but it's something to consider.

In case you are unfamiliar with hosts files:
http://accs-net.com/hosts/what_is_hosts.html

In Windows 9x and ME this file is at "C:\Windows\hosts"
For NT, Win2K and XP it is found at
"C:\windows\system32\drivers\etc\hosts" or
"C:\winnt\system32\drivers\etc\hosts"

It is a file without an extension that can be opened with Notepad or
any other simple text editor.

I would take a look at that file and make sure sanchezartcenter.org doesn't
show up anywhere in there.  If sanchezartcenter.org appears in the hosts file,
delete that line or put a # in front of that line in the file and save
it (again without an extension).  If you save it as a .txt file it
won't work.

Again, this probably isn't the problem but it's worth taking a look at
if everything else doesn't work.

Of course, as vballguy-ga said, it would be a lot easier to diagnose
if you gave us the exact error message text.

error message 404 when i type in letters at address
bar.......www.sanchezartcenter.org
error message 403.6 when i type in numbers....63.99.224.72
ping utilty came up with above number.
hosts file had listing with different number.i deleted it.
i have only one computer.....friends computers work fine.
i have dsl line

So it was in your hosts file?!  Wow that's odd.  Ok when you fixed it
and saved the hosts file, did you make sure it was saved without the
extension?  If you go back to the directory where you found it, does
the "hosts" file have a .txt extension on it?

If you correctly removed all occurrances of "sanchezartcenter.org"
from that file and saved it again without an extension, then you
should get the same error message by typing
http://www.sanchezartcenter.org in your browswer as when you type
http://63.99.224.72

Ok now lets look at the fact that you get a 403.6 error message when
you use the IP address.  I'm no expert on web server errors, but I'll
do my best to help you out with this.

HTTP 403.6 - Forbidden: IP address rejected 

This error is caused when the server has a list of IP addresses that
are not allowed to access the site, and the IP address you are using
is in this list.

That means that either your internet service provider is blocking that
IP address for some reason, or you are using a proxy and that proxy is
blocking the IP address.

Do you have access to a laptop or someone elses computer that you can
test that website from your location?  That will rule out a problem
with your individual computer.

Also are you using a proxy to connect to the internet?  If you aren't
using a proxy server, then contact your ISP and ask them why they are
blocking that IP address.

Ok as I said, I'm not very good at web server error messages.  I just
tried that IP address and got the same error you did.

I'm pretty sure if you go back and fix that hosts file problem and
make sure it's saved without an extension, your problem will be
solved.  Make sure after you fix it and save it, that you close all
browswer windows (and maybe clear your recent history and cache)
before you try again.

Good luck and let us know how things go.

OK.............THANKS TO YOU ALL.........PROBLEM SOLVED!!!!!!.......

HOSTS FILE WAS THE CULPRIT..........YTON-GA

Glad you fixed the problem!

The hosts file can be very handy for eliminating banner ads and
several other internet annoyances, but it can also cause problems if a
website changes its ip address and it's in your hosts file.