Well, the graphics are on-board, but they are pretty good graphics despite that fact. The motherboard is an ASUS M3A78-EM. The link is here:
It has the Radeon HD3200 GPU, with up to 256 MB shared memory. Maybe that's it, and I guess I could try oading it on my machine (I have a 9800GX2 with 1 GB of memory, but it's over 2 GPU's.... so would that be the same as 512 MB video memory?). If it is memory, should he try turning down his on-screen resolution? Would that do anything?
As for setting usable memory, can you do that in system settings or program settings, or is that application specific? It sounded like the latter.