Check out Shadetree's website (Scott) as he's done exactly what I believe you are planning.
Shadetree's Website (go to the live rock support frame section)
If I had done the planning ahead of time I would have done exactly the same thing. Seems like a fantastic idea to me.
BTW... Scott and I started our tanks within a week of each other, so it's been great watching each other's progress (although I have yet to see it in person)
[ 14 November 2001: Message edited by: canadawest ]