register.exe is a known virus utility. The best course of action is to remove this file, after backing up your computer, and scanning for more malware.

register and LameToy 2000 can cause major problems with the security of your computer, and need to be scanned and deleted. Before making any changes to your computer, you should backup your files, or create a Windows system restore point, so you don't lose any essential data.

To be sure that you are not removing essential files, use Computer Associates's free scan of your computer.

Since register.exe is active on your computer, there's probably more adware or malware you haven't discovered. Get a free scan of your computer.