(4:47 PM)
making favicons
there are many, many articles on making favicons. this is the first one that helped me: How to Create and Install a favicon. it helped me because it was the only one that mentioned png2ico, which converts pngs to icos, and runs on *nix/windows (*nix includes os x). I installed it on my mac via fink. works great!
$> png2ico favicon.ico logo16x16.png logo32x32.png