Getting rid of the advanced guestbook..

Hello..this may have been answered in a previous post as well i have no idea. but um..I cant get my advanced guestbook to work at all im in a band and we all work on the site at different times maybe someone had deleated something that should have been trashed. I want to start over with the advanced guestbook so how would i go about uninstalling it without harming any other files?

Je could just delete the guestbook directory.
All your entries will be save in the mysql database.
Just install the guestbook again and point to the old database.