I got a Canon HF100 for christmas. i am wondering how to transfer the footage to my mac so i can edit it w/ imovie 06.
THanks, in advance!!!

iMovie'06 does not deal with AVCHD, which is what format your Canon records in. However, there are several ways to get around this, however, since I'm no expert, you'll have to do some research for yourself.
Since iMovie'06 works with AIC, you'll need to convert your AVCHD to AIC before editing. There are two ways to do this.
1. Use iMovie'08 to convert the AVCHD to AIC. Since iMovie'08 stores everything in a Library, you should be able to dig into that library and import them into your iMovie'06 project.
2. Use Voltaic to import/convert your AVCHD footage. It takes a long time, but it works (at least from what I've read).
One thing to keep in mind. If you're working on a PPC Mac (non-Intel), you can't use iMovie'08 to convert your footage.
Also, any reason for using iMovie'06? I know that many (most) folks don't like it, but I prefer it due to the Library feature. Plus it's a little easier to use, although I'm equally proficient at both. To each their own.
Good Luck!
EDIT - Since you're on a G4, you're going to have to use Voltaic. Be prepared for long import/convert times. I don't want to scare you off, but I've heard that imports can take 12x real-time or something like that.