How do i remove the Bravenet message on my Guest Book main page and replace with my own ?

guessing... pay for pro instead of free.

for starters you have 2 guestbooks. The bravenet one is LINKED INCORRECTLY so link it properly

if you are referring to the post bravenet leaves when you register your guestbook just delete it


And if you want to post a welcome message then just post it to your guestbook is all you can do but posts after it will cause your post to just fall to the bottom of the pile.