Well, so much for a clean install being simple! Ugh.
I did the install, no trouble. Once it was completed, I plugged into my network and typed in the "sudo" commands given here on GT to get my broadcomm hardware to work wirelessly. Typed the commands in, computer did all the same stuff as before, then I restarted my machine. I anticipated that the computer would auto-detect the network, as it did before. This time: nothing. I've gone in and manually configured the settings for my network (name, password), but I cannot get it to see the wireless network.