I know this is possible to do, as i have googled it and found some weird box things, but what exactly do i need to play my pc games such as oblivion, on my tv. tv is 27", dont know if that matters in the resoulution or whatever.
Thanks

You need a video card that supports TV-OUT

Many TV's may not support 800x600 or higher resolutions.

Inverto is sorta correct, but the resolution of a Tv is even less than 800x600, it's closer to 640x480. TVs make incredibly bad monitors, unless they are High definition TVs.

Do yourself a favor BACKUP!

Yes you'll need TV-out...
Also, i think it's the videocard that has to support higher resolutions on TV-mode, most modern cards will do up tp 1024x768.

in my experience the picture on a TV screen connected to the TV out on a computer is usually rubbish quality unless you are playing a DVD in the computer, then it seems perfectly fine.
i've never understood how it can be so good on a DVD movie fed from the PC to the TV but so bad when it is the desktop screen or whatever that is displayed.

True.. when your are on the desktop everything is a bit vague, i think it's because of the larger pixels... But when watching movies or playing games it will work perfectly.
When gaming on a TV you'll even need less anti aliasing to make perfectly smooth edges.

Ok thanks guys, so i need a video card with tv out, check. i have that, now what cables or connectors do i need?
Thanks so much all help is greatly appreciated

You'll need a black TV-out cable most of the time it comes with the videocard when you buy it:

http://www.cdrinfo.com/Sections/Articles/Sources/XFX_6800GS/images/IMG_2755.jpg

And if you want sound you'll need an audio cable which has 1 black plug on one side which goes in your PC's line-out (green) and on the other side is splits into two plugs either red and white or red and yellow... these you have to put in your tv's audio-in or in your amplifier if you have one:

http://www.ust.hk/itsc/classroom/notebook/photo/cable_audio_pc.jpg

Oh, and make sure you set the resolution of your desktop and all your games you intend to play on TV, down to 640x320 BEFORE you put it on TV.. otherwise, you may get no screen... Then you can experiment with the resolution a little to find out the max your TV will do.

here is the way to go.. this will hookup as a monitor.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1646804&sku=N223-3200

best of luck Frank :

"You'll need a black TV-out cable most of the time it comes with the videocard when you buy it:"
Thanks Comper, the only thing i need to know now is where dows the other end of that black tv out cable go, i see the place on the vid card, but i dont see that connector on the tv anywhere?
Thanks

"where dows the other end of that black tv out cable go"

Well, not all TV's have such a connector.. if they dont then they usually have 3 smaller ones collored red, white and yellow..
In this case you need to buy a TV-out cable which splits into these 3 colours.

or.. you can buy a scart adapter for the black TV-in connector:

http://www.paradigit.nl/pdf/10003077v.htm

Thanks so much Comper, youve been real help. soon hopefully ill have my tv hooked up.
Thanks agaim