After about $180, I finally got my system where I want it. It is pretty fast and dvds and most videos works, youtube, google, etc.
Where I started: Old PCChips board, integrated vga (via) (3 years old), 512MB ram, 2mhz cpu (amd sempron)
Asus - 3.2mhz cpu - 1gig ram ($140)
Graphics Card: Nvidia, PCI Express 128MB 5200 ($40)
Sound Card: SoundBlaster Audigy (the cheap one)
Dell 21 inch monitor. (old, used but runs about $60)
Random Harddrive. (existing)
Actually, I wasted $25 on an ati radeon card. I read about all that stuff on how ati isnt really that supported on linux so I didnt spend another second trying to get it to work.