Just in case anyone is wondering:
Window + Box fan - Side door on case + 3.3c Wisconsin evening = 5c board temps under full load.
__________________
Everything aircooled

(I honestly don't know why you guys let me stay a member...

)
Always folding:
WXP Pro:
KD7R + Palomino 1800+
W2K3:
4x P3 Xeon 500 512KB (4 clients)
Linux boxes:
none

Had to put them to use doing *real* work.