Bernie should be able to directly access floppies on machines with built in Superdrives (all beige box PowerPCs). Newer models tend to be flaky though due to cheaper floppy drives that have issues reading GCR disks..... find one that has a Sony built drive. That being said, beige boxes can image the disks using Disk Copy 4.2, which Bernie can mount and read. There are tools to convert the images into Apple II emulator friendly 2MG files as well.

Of course, if you have a real Apple IIgs, there are tools to make 2MG files direct from disk. ADTPro is the slickest as it handles getting the image to a modern machine with the least hassle.

BTW, The Printshop GS disk image can be found online. That's the easiest solution.