Sealing outlets

I did some searching threads and havn't found any specific tips regarding the sealing of outlets. I have my room/in/room constructed and inside the sealed room all outlets will be surface mounted to minimize wall penetrations. In one of the adjacent rooms I do need to put outlets in the outer wall of the room/in/room. So its: sheetrock with outlet | stud | air | stud | sheetrock Insulation in the middle of course. Curious if there are any steps I should be taking around the outlets other than acoustic calk around the wiring 'knockouts' and where the outlet meets the sheetrock. Should I build little sheetrock boxes around them or something? I don't want to go overboard but it sure feels like big holes in my walls... Thoughts? Thanks!

http://www.johnlsayers.com/phpBB2/viewtopic.php?t=2671 Sorry, this is about to be included in the links in the REFERENCE section... Steve

As always, thank you Knightfly.