How can I upgrade windows xp to play DAO (Dragon age origins)

So In other word's, I should buy a New graphics card?
Or a whole new computer?

The integrated video card is your problem. You definitely need to upgrade it. You should also read the System Requirements printed on the box or go to the game's homepage.

Post the wattage of the power supply and look at the sticker to see how many amps is on the +12v rail; usually defined as a number and the letter "a".

Here's an example of a PSU with two +12v rails:



+12v1 provides up to 10a, and +12v2 provides up to 13a.

Thanks Man, Much is Appreciated.  

An HD4670 should work unless your PSU is terrible and will be fine for DAO at low resolutions.

Dragon Age is OK... I was a bit let down (PC version with all settings maxed), but I haven't played it but a few hours so I'm trying to keep an open mind. Graphically speaking it doesn't seem to be too demanding although I do believe it takes advantage of more than 2 cores... but still, your X2 should be able to play it at an acceptable level.