Use outside air to cool the cpu? might have a moisture problem there. Just get an ALPHA PEP66 38CFM Fan/Heatsink combo (about $40 USD) and more fans.

The moisture problem can be taken care of I believe by using a catch and maybe a dehumidifier, besides it cant be that different from the humidity inside, unless ofcourse ins raining.

put it near a window ?? my computer is about 4 feet from my window, low window too, old house, windows about 3 feet off ground (comp is to the left or window) and after it being on all nigh t both my monitor and box are cold to the touch , no moisture probs i have yet noticed nor should there be any so if u can, sit it near an open window in a way that if it rains etc etc ti won't get wet thas what i did, and in the summer i move it about 2 feet furher to sit beside the a/c vent
 
------------------
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ICQ me!!!
========Specs========
ASUS P3V4X
VARIOUS O/C SETTINGS
PIII 533 @ 640 133fsb
PIII 533 @ 584 150fsb
384mb PC133
20gIBM 7200 rpm
40g MAxtor 7200rpm
Sound Blaster LIVE!!! Platinum
ATI All-In-Wonder 128 32mb 2x Agp
19'Samsung SyncMaster 950p
Logitech Wireless keyboard/Mouse
Creative 52x cdrom
Richo CD-R/RW MP7040a 4/4/32
Epson Stylus colour 760
Cable modem
 
and i networked with a MAC G3, now sharing printer/hardrives and internet.
WOW, aren't i special now
 
AND iT ALL WORKS GRRRREAT!!!'

Over at [H], there is a guy from Alaska who uses drer tubing to direct outside air directly onto his CPU. I never heard him speak of moisture problems, only that his hdds were getting too cold and freezing up.
 
-bZj