Heh. Yeah, I'll definitely be joining WAMAS. And if you guys consider kenya trees and xenia to be crap corals, then can I go through your garbage? I'm easily amused.
As I PMed to Larry, I do have an extra 30g tank collecting dust, but I've been hesitant to use it because I can't afford the lighting at this point, although I do already have the lights mentioned above for the 10G. (I was really annoyed when what I thought was a second strip light turned out to be incandescents.)
I do plan to keep an eye out for cheap live rock and sand.
As to what I'm trying to accomplish in this hobby: Right now I want a cheap start. I've loved marine life all my life (why, oh why, didn't I major in marine biology when I had a chance?) so I know I'll want to keep trying new things (clams! sea horses! octopuses!) as time goes by -- but as freshwater fishkeeping has taught me, you have to get your feet wet first.
Oh, and is this a universal condemnation of overflow boxes? It seemed like the smartest option outside of drilling a tank.