Should be able to get a A64 3000+ on a decent mobo, 1gig RAM, maybe a 6600GT for graphics, etc.
Do you need everything including monitor and Windows?
Do you overclock?
Its been over a year, but I got a decent (for then) gamer with XP Pro for a little over 800, but I had a monitor already (but XP home is less than Pro and the difference puts you well on the way to get a monitor).
Mike.
<font color=blue>Outside of a dog, a book is man's best friend. Inside the dog its too dark to read.
-- Groucho Marx</font color=blue>