Re: help with build???
Dual booting XP and Mac? I'm not sure you can do that(maybe with special software), because as far as I know, Mac OS can only run on proprietary Apple hardware.
Under $500-700 is a little steep for a computer with the purposes of video editing. Usually for video editing, you'd want a dual or quad(preferred) processor, a lot of HDD space, and 2GB+ RAM. Unless it's minor editing.
I'll see what I can list up.
Also, do you need just the tower or the whole system(monitor, speakers, keys/mouse, OS, etc.)?