You may want to check out Slicer/Dicer by Spyglass Inc. (call the 800
information operator for phone number). Email address is
support at spyglass.com. I've used the Windows version. It's inexpensive
compared to the Unix-based stuff I've seen. The only problem is that they
don't provide a simple way to register serial images. You will have to
write a few macros to accomplish this.
Glen Frick