Use another computer's DVD drive

Hi, I have a project ready to burn in iDVD; however I don't have a DVD burner. My choices are to use a PC (preferable) or a MacBook @ 10.5.2, which both have DVD+RW drives. My questions are these: What is the best way to make use of the PC's optical drive (if their is one), preferably from my iBook (aka some way I could connect the two and have the PC's drive appear in iDVD).
The other question is, with the .2 update of Leopard, DVD/CD drive sharing seems to have become an option, so is this feature accessible from my 10.4.11 iBook? If so, I assume a FW connection would be best (aka better than Ethernet or 802.11). Now, in theory I could also boot up the MacBook in Target Disk Mode and still be able to use its drive, right?
Thanks for your help