Digital BW, The Print

I recently came back to B&W printing after a 2 year hiatus.  My previous system consisted of a 
Mac OS 9 machine, MIS quadtone CFS inks, PS 7, 22" CRT and an Epson 1160 (still in perfect 
working order.)

I'm now using OS X on a G4 PB with CS2 and MIS UT cartridges to get started.  Initial results 
were terrible.  But thanks to Paul Roark, who developed the software for the UT inks, I 
discovered the problem to be the GIMP driver for the 1160.  Epson never upgraded their 
1160 driver for OS X.  Now, in order to print, I have to take the file back to the older machine 
and reopen it in PS 7.  Nor a happy situation.

What are my options?  Upgrade the printer, change ink supplier, transfer files back and forth 
between machines or what?

Any and all advice appreciated.

HFL