EXS 24 Logic Sampler Users Group

Hello all,
I'm really interested in trying some Soundfonts in the Exs sampler. 
However, most sites I go to have "windows only" versions of them. Still 
others require a "conversion" program to unpack them or whatever.
Sorry for my ignorance on the subject - what's the best way to find 
good soundfonts for the Mac and unpack/unzip/convert them etc. for use 
in the EXS sampler? I'm suing Logic 8.
Thanks in advance!
Tom