Pat,
Thanks for all your help. I've gotten things back up and running now, with old databases intact. I was getting this error:
Unable to connect to the database. 101 - SQLSTATE = 08001. FATAL: database "[my database]" does not exist.
But searched through the forums and followed your steps (thankfully had saved my ../data folder) from another thread and it's all fixed!
Only problem I'm having is a cosmetic one. When I load up a PT2 database, I get a scrunched database screen. I can minimize/maximize/resize the window that the DB screen is in, but I can't resize the actual DB info screen. Here's a screenshot: