Could someone please tell me if Premiere Elements 9 or 10 allows one to hook up a mini dv camera, such as a Canon GL2, and record direct to the hard drive of a Mac?
Yes, both PrE 9 and 10 allows this.
Just Goto Get Media panel and select the option based on your camera.
If I understand what you are looking to do - real time recording to the computer's HDD, with a direct feed from the camera (not going to tape, or flash memory), then I think that you will need PrPro with the included OnLocation program.
Now, if I have misunderstood exactly what you want, please ignore the above suggestion.
Thanks Bill. The On Location also works.