John, if you look at the thread above, it does explain and show very well the process, and let you take a peek at what I did.
This is not a hard job, but it is one measure 2-3 times... then cut, that can be done without much sweat.
I will talk to you soon about the whole process or ask me a direct question here...
Roger
HT: 2008 My Dream La Scala HT System for downstairs is finally done. 7 Split La Scala's, (Timbre up front DOES matter!) Two Klipsch THX KSW 120 subs, with the KA 1000 Amp, with the Velodyne SMS-1, Bass management system, with 2 THX series KS-525's as side surrounds. WOW! Dedicated 17' x 30' room, 106" Daylite screen, with the Infocus 7210 DLP Projector. Sunfire Theater Grand IV, Sunfire Signature series 200 x 7 amp. OK, It IS Klipsch Nirvana, for me. The ticket booth is open, and the popcorn machine works too! Dim the lights, on with the show!!