I want to know if TVs availble in USA will work in India? I am
planning on buying a Plasma TV in US & taking it to India.
(http://www.circuitcity.com/ssm/Sony-42--Plasma-EDTV--KE-42M1-/sem/rpsm/oid/94935/rpem/ccd/productDetail.do)

1) Should I be concerned about this TV not working in India (NTSC/PAL)?
2) Will the TV's usable life be shortened because of voltage difference?
3) What do I need to look for in a TV to make sure that it will work in India?

1) Incompatible. Lots of reasons -- first US is NTSC (never the same
colour) and India is PAL. Unlikely to be multiple compatible.
2) Indian voltage is 220 volts (putatively). Unlikely that a USA
purchased machine would be designed to accept higher voltage. Would
blow up.
3) Buy one in India.

And my 4) You would be hit by import duties in India unless diplomatic.

BTW, importing an American TV wouldn?t let you receive American
channels over there. You?d still only get local ones. :-)

Not sure about this, but American satellite equipment and TV might
work fine -- but you?d still need a voltage converter (transformer).

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As the fetures say it comes with A/V inputs with those you dont have
to worry about NTSC/PAL systems i am sure will be hooking the TV up to
either a VCR, DVD or a sattelite Reciever well if you do most of them
come with A/V outputs now those are the red, white and yellow hookups
AKA RCA cables, so you will get a perfect picture, you can also hook
it up to a computer with no problems, and for the voltage, some of
them come with a switch or you can just buy an inverter with a high
wattage with no problems what so ever
and by the way it comes with an s-video input too so that makes it more universal
now i think you should buy it here cuz its more expensive there even
after u pay airport duties, one more thing HDTV wont work unless you
get a HDTV Sattelite reciever but thats the same case here in the
states
Over all i think its worth it that TV's MSRP is 4,999.99  so you are
getting a good deal on it!

no it wont, you have different outlets.

It will work with DVD Players, but not with cable (coaxial input).
That transmission is in PAL, and unless the TV can descramble PAL
signals, it's not gonna work.

As a workaround, you may however try feeding the cable input to your
DVD player or amplifier and use the component video out from this to
go into your Television. Might perhaps work this way, though it's just
a guess on my part.

Thanks for the response guys. I found this website that sells
multisystem TVS. Do any of you have any feedback on this?
http://www.pcvideoonline.com/productdetail.asp?level=45&catid=55&productid=2305

Thanks!

Yup. This WILL work. 

All the best at customs.

Happy viewing.