Switched Servers - UPDATED

Hi. I hope this is the right place for this question. I recently switched ISPs and moved all of my guestbook files from the old to the new webserver. It looks like I configured the program correctly. But, its not bringing up my old guestbook entries. I would like to show my old entries and keep my existing configurations (ie database password). I can't even get into the admin page anymore. How can I just revert back to that? I'm sure there is a tutorial on how to do this, but I looked and couldn't find it.

Thanks alot.
Darren