Guestex is a highly flexible guestbook, it uses a record template which lets you to change the layout of the guestbook at any time, without any difficulty. It doesn't use hard-written data in the record database, that means you can change the options and the layout of the guestbook at any time but the guestbook will still work fine in the new way you want it to be.

Guestex also comes with a list of useful features which you really need:

ENOUGH? NO!
Here comes the most powerful feature of Guestex:
It lets you to add as many fields as you like in your guestbook, without having to set any anything in the script. You can simply add the fields in your submission form, and Guestex will do the rest.