Back in the day of MisterWeave I had an old 486 (processor type, not speed) with 16 megs (12 via credit card thing and 4 megs welded on the motherboard) with a 640 X 480 X 256 color screen running Windows 95. At one point, I installed Apache, Php, Perl, and a backup copy of my YaBB BB. Don't remember what browser I was using.
Man, would it chum for bits... but it would run!
Anyone else?