Guestbook Transfer...How..?

Hi, I currently have 2 guestbooks running on different servers, both are Advanced Guestbook 2.2. Im switching servers soon so i need to carry over the contents of the 1 guestbook to the new Empty Guestbook. I thought i`d be able to do it just by changing over certain files but both the new and old Guestbook directories and files are exactly the same, so I figure that the actual Entries must be stored somewhere else. Where..?

Any suggestions.

The entries are stored your mysql database