Seriously... 1GB of RAM is plenty enough to run this game. Vista is also not a problem. I run ddo on athlon 64 x2 5000+, 1gb pc4200 ddr2, radeon hd 4870 1gb, and windows vista. I can play ddo windowed on my lcd while watching a blu-ray on my hdtv. I do not lag in shroud, and hardly ever in sub, despite others claiming constant lag. I would definitely say Sambvca's problem lies elsewhere.