Hey, turtlemechanic, I have a really good suggestion for you ---- spend the fifty bucks and grab VinylMasterCUT. It's a very sophisticated program that you'll be happy with using for your work.
Alternatively, give yourself a chance to see if you like SignBlazer, it'll run the SC just fine (use 'Liyu' for the model in setup).
Not supported by anyone (except us, if you have specific questions, there are a few oldtimer users, including me, of that software).