500$ could get him a complete system. Hell, 250$ could get him a decent xp chip, mb, ram, hd, cd-rw, and a decent video card.
For 60$ you're better off looking in the buy/sell section of the forum. Find someone with a duron 1.1-1.3 mb/proc/ram for sale. You're better off saving up 100$ and buying a cpu/mb combo from www.pricewatch.com.
Duron 1.6 or something.