The best info/help you can get for this is from folks that do product testing and certification for a living.

This company can handle the FCC testing & certification:

Compatible Electronics
102 Olinda Drive, Brea, CA 92823, United States
Phone: +1 714 579 0500
Fax: +1 714 579 1850
www.celectronics.com

This company handles FCC certification and UL http://analab1.com/

Just give them a call and let them know what you have. They'll help you, and give cost estimates for free.

Best of luck with the new gadget...