I'll third that. I have a friend who runs Win 98 (yeah, seriously), win 2000, win xp, and two flavors of linux with VM ware and swears by it. I had forgotten about it till Michaels comment but it really is great for putting up a new server on short notice without the need to rebuild an entire box. Shop around for VMware - he got his for a reasonable price on auction... so far as I understand it.
I'll third that. I have a friend who runs Win 98 (yeah, seriously), win 2000, win xp, and two flavors of linux with VM ware and swears by it. I had forgotten about it till Michaels comment but it really is great for putting up a new server on short notice without the need to rebuild an entire box. Shop around for VMware - he got his for a reasonable price on auction... so far as I understand it.