I installed trial version, and it changed my homepage, and I want to restore it, how do I do it?
You have to run an application that scans the computer and deletes the changes done by the Web Watcher Basic. Also, I wouldn't recommend using it as it presents a threat to your PC (adware spam or malware infection). After some extensive search, I've found out that it's a keylogger application designed to record the information on your PC. If you didn't install it, then immediately install an antivirus and run the AdwCleaner application.
Antivirus list: http://software.informer.com/search/antivirus