Do a search of your computer to see how many LW programs exist & where they are. Check what versions they are.

Normally, LW will uninstall a previous version at the beginning of installation. Or else, yes you can go to start menu, Programs>LW>Uninstall. However, I did also find more than one version on my computer. One reason was due to 2 admin accounts. Another reason I'm not sure about. Since more than one seemed to exist within the same account. So I simply deleted one of the copies. I'm not so sure that's the best way to go about it however.