I suggest something in the 8 serie, like a 8500GT.
A graphic card of the type 7300 LE is really bad, and i mean BAD. Also 256 is not so good.
Especially for this time of the year 2007, there are way better cards for low prices.
I can't believe you buyed such computer with a 7300LE. It does not fit together.
I'm still using XP, because Vista is horrible, and i got a MSI Geforce 7950 GX2 1GB DDR3.
One of the best directX9 cards for XP. In the future, when i will use Vista again, i need to buy a new processor, because this E6400 of intel s*cks. And ofcourse a DirectX10 graphiccard for windows Vista, when the official DirectX 10 patch will come out. Now, windows vista is running on directX9 and a little extra. So as i said, when the directx10 patch will come out, Vista will run 100% on directx10.
Good luck with finding a good card in the 8 serie.
Niels