LoL, yes I know/remember ISA slots were, in fact I have a 450mhz system sitting next to me that has a few of em :P Anyway I was wondering what you would suggest if I made a home made exhaust tube like you said, i have 2 empty slots, however they're right below my video card and above my sound card so nothing too big will fit. I think that if i take the two slot covers out and cut the bar in between, then also cut part of each cover out and put a small fan off an older heatsink in there and then put a tube of some sort leading to up by the heatsink it should pull much of the hot air away? I'm also considering drilling some holes and putting a big 120mm fan in the top between my DVD drive and my PSU. Also I will soon be getting a Thermaltake Volcano 11+ heatsink to put on there and maybe some better thermal compound, and that should certainly help a lot.