Dog Dish Hubcap Removal

Ok, I have to get new tires on the front of my duster, can anybody tell me if they've come out with a tool or a good idea for removing the dog dish hubcaps off my steel wheels. The last several times I've tried this with the screwdriver and rag method, I've still scratched my wheels, and sent the dog dish flying across the garage bouncing off anything in its path. Now that my wheels are painted all nice, I don't wanna do that again. Any help is appreciated.

Thanks,

Will