Thanks for the reply Bud.
I already have ImagePrint version 7 on the PC platform, so it sounds like I can use my dongle on a Mac and hopefully activate a downloaded Mac trial version of the software.
From the description of IP7 on the Colorbyte website, the license does appear to be cross platform.
If this doesn't work out I'll give them a call as they haven't responded to my emailed questions.
The decision now is when to switch to a Mac. I would prefer not to have to pay for an OS upgrade a couple weeks after buying a new computer, but on the other hand if the CS3 apps have problems with Leopard, I might be better off with Tiger.
Regards,
Richard