Guestbook vs Adv. Guestbook + multiple users?

Few questions.. not sure if it was answered elsewhere but:

1. What's the difference between guestbook and advanced guestbook?

2. Is it possible to use one guestbook script to run several guestbooks? If not, do you know of any other guestbook scripts that allow this? thanks

Great script by the way =d

1. guestbook v1.5 in a perl script
ad. guestbook 2.3 is a php script

2. visit hotscripts.com and search for 'guestbook'

The above worked for me.

Thanks