Ive been in this situation. I filmed at parties, my friends getting drunk, dumb destruction stuff, all during my senior year in HS (01-02) and dumped all the DV onto my B&W G3 for editing. My brother had a quicksilver 867 with a superdrive so after i was done transfered the edited quicktime files to my brother's comp over ethernet. I never tried to load up iDvd though. I bought iDVD2 and had it sent to me but it was an upgrade so i couldnt just throw that on my comp. I was to lazy to bring all the iDVD files from my bro's quicksilver over to my G3.
Oh well, i still have a kick ass DVD of my senior year, very bad things on it though