I'll be sending you some mail soon...
One thing you need to be able to do to work with rockbox to any extent with a mac is learn how to show hidden files and folders, as the basic rockbox folder is by default a hidden folder on a mac. There are a number of ways of doing this. You can use onyx, which is a free dl from apple. Or you can use terminal, copying and pasting
defaults write com.apple.finder AppleShowAllFiles -bool YES
into it, pressing enter, and relaunching finder. When you are done with the hidden folders, you do the copy and paste thing again, substituting NO for the YES, and relaunching finder again.
Another good idea is to go to the misticriver.net site, and peruse the rockbox for the ihp1X0 forums. Lots of good advice there.