Re: need help upgrading graphics card
Just to echo some other posts, they're is a lot more about a vid card than just the size of memory. Just as a way of understanding, in ATI and Nvidia cards, the 1000's digit represents the series and the 100's digit represents the level in that series. So the 7600 GT is last series' mid-range card from Nvidia. They're on the 8000 series now and ATI is on the X2000 series. Very basically you can use this to get an estimate of comparability of a card.
The PCCLUB guys were probably right, I would stay away from low end older cards like Nvidia 7300 LE, Nvidia 6150, ATI X1000, etc. Low end cards like these don't do much more than integrated graphics.
I think you can usually find better deals online for video cards (or used on Craigslist) and Newegg has excellent deals usually. The best budget cards are usually last series' 600 or up lines like the Nvidia 7600 GT or the ATI X1950 XT. And make sure you're buying for the right connection (AGP vs PCI-e).
"To err is human - and to blame it on a computer is even more so." - Robert Orben