Great advice from everyone thank you!
I've decided to make an appt @ Battlefield Sports LLC in Virginia. They told me they handle all the paperwork for the customers so everything is done "in store."
I'm looking at (aside from the 200 tax) 275.00-525.00 for the silencer. If I'm going to spend that much money I think I'm going to buy one for my USP .40.
Glock 26 - HK USPc .40 - Walther P22