Can't help you with who you should do it with. Unless you've got Dent Master or Dent Wizard in your area?!?! The only problem doing it with them tho is that they will expect you to work for them afterwards. If you can get the course under your belt and set up on your own then it is well worth it. I've done mine over here and it is going okay, mind you there isn't the same amount of companies over here offering this service to car dealers like there is in the UK. Good luck with it

All the best, Nige