Why wait? You'll be surprised how many people have systems just lying around waiting to be stripped down. I've snagged 1 x PPro 200, 2 x P-233, 1 x P-166 MMX, 1 x P-133, 5 x P-75, 2 x Cyrix 6x86 PR200, and a whole buttload of 486es just by asking people around the office. Plus there are other goodies like video cards, sound cards, modems, and network cards (3 x 3Com 905Bs!!!!). Some Pentiums are being retired soon and I've got my greedy mitts ready.
Go out there and start some "Social Engineering"
Windogg