i just switched to a mac and i dont really know how to work it yet. i just tried to download the hitchhiker's guide game and it says it needs a program to open the zip, and i have no idea how to do it. i'm mac/computer challenged.

any advice appreciated! thanks

You'll need to find a Mac-compatibile archiver capable of handling ZIP format.
Wikipedia has a list.

the BOMarchive helper should be able to handle them - otherwise look for stuffit, that one has served me well. BTW congrats on the switch :w00t: ;)