Thanks Ernst.
I am not using my printer for photo work, mainly signage and posters, so for the most part, color doesn't have to be an exact match. What I have done, is priinted a rgb color chart from Corel X4 on the chosen paper and vinyl with proper profiles. When a customer has certain pantone colors they need, I take the pantone chart and compare with my printed chart. Not exact color reproduction, but close, and this is explained to the customer ahead of time. Sort of like a cheater system, but I believe a lot of sign shops use this procedure, especially the ones without proper hardware calibration and printer profiles.
Again thanks Ernst for your insightful info.
Wes