Also, also, try typing OS (OSX if you got OSX) or Mac after the file name when you do a search: the results are more likely to be files for Macintosh.
Know that .exe files are not for Mac (thankfully to tell you the truth) and yes, of course you can dld stuff with your PC and pu them in your Mac (by burning them on a CD for example).
Why don't you try connecting both computers so that they both have Internet?

__________________
iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

"Raise your can of Beer on high
And seal your fate forever
Our best years have passed us by
The Golden Age Of Leather"
-Blue Öyster Cult-