Hi Jimbo,
Welcome to iMovie Discussions.
Your cam SHOULD work with any version of iMovie (the beauty of miniDV). Possibly you are using the PC setting on your camcorder in trying to connect to the Mac? You must use the PLAYBACK mode to capture from your tapes.
Here's the routine. Cam is off, Mac is on. Connect the Firewire cable to both. Open iMovie and turn on the cam, set on PLAYBACK. iMovie should then recognize your cam and give you the import window.
Just in case, you must be using a Firewire cable, not USB, as others have made that simple identification mistake on these boards.