Dilemna on Gaming PC
Ok, so I have a HP Pavillion a730n, a fairly outdated computer. Don't remember when it was first released but I know it wasn't recently. Anyways, I am having lots of troubles playing games besides Braid and NBA Live 07 on this computer. I also have a iMac with an ATY, Radeon X1600 and tried to game on there with a program Parallels to make my OS Windows. That didn't work so I tried Boot Camp, but there are some errors there that it will not let me fix regarding unmovable (spelling?) files. So my choices are between getting Time Capsule (500 GB, $299) for the Mac and hoping that works or getting a video card that fits in my a730n (ATI Radeon 3850, $90-$145).
What do you guys recommend doing because I have no idea what would be better for gaming (Fallout 3, Half-Life 2, etc).
Thanks in advance,
EDIT: It might be relevant that I currently use Windows XP on my a730n and Vista on my Parallels.