if it's an exe file it's not ment to be installed from the phone itself
it's an pc application which automaticly use activesync to get the cab files down to the pda and install it there
one thing you can try is to rename it from exe to zip on your mac
and see if it's just a self extracting zip file most activesync install files are and then you can copy the arm cab file out and copy that to your pda
and run it there
or you can install xp on bootcamp and use activesync normaly |