Ok, better now. An hour and a couple of stiff ones later, I think I'm back. For any other intrepid newbies out there:
I went to install zip and the CM file was not there. I rebooted-BIG MISTAKE. Went to stock, wouldn't boot to CWM. A little panicky at this point. Couldn't get anything to work, so I did another factory reset through Sense and I'm back in recovery. The first choice in "install zip" is \0\ so I chose that and THAT is the sdcard drive. I found the cm.zip file there and flashed it.