The easiest way to totally remove LL is as follows (first, make sure you have a Mozilla installer handy somewhere, because you're going to need it.) You can download the latest version at mozilla.org.
Go to my programs\mozilla.org\Mozilla\defaults\pr
Drag "bookmarks.html" out of the folder onto the desktop.
Close Mozilla and Quick Start (if running).
Go to Start, Settings, Control Panel, Add or Remove Programs.
Uninstall Mozilla completely.
Go to your installer and reinstall Mozilla.
Again, go to my programs\mozilla.org\Mozilla\defaults\pr
Drag "bookmarks.html" off the desktop into the "profile" folder.
When Windows asks if you want to replace the existing folder, click "yes."
Close everything, and restart Mozilla. You will have a fresh copy of whatever version you installed, with your bookmarks intact.
WARNING: don't try to install the new Mozilla until you have completely un installed the existing program, otherwise you will end up with LiveLizard again.