Eric-
Couple things:
1) I believe there is a special version of Powerprint (or whatever it is
called to use a windows printer on a Mac) specifically designed to go from
Parallel to USB. Made by the same people that make Powerprint. Don't hold
me to that though.
2) On www.macnn.com today there is mention of a Lexmark laser printer that
connects via USB. I looked, and it says Windows only, but macnn had a
report of a guy using it successfully with a B&W G3.
Hope this helps
Dan