Hi,
I've got no problem with sending along a .DMS file of the GVP install disk, but as you mentioned, I'm not sure how you can get it off of your Mac on to the Amiga...
Hmmm... If you were running E-UAE on your iBook, you could grab the file I send, un-dms it and write the necessary files to a low density PC floppy (if you've got an external USB floppy available to your Mac) and mount the "PCO:" DOSDriver under WB3.x on the Amiga to give you the ability to read the PC floppy... whew.
GOOD LUCK!