mscnsz.exe is a known spyware utility. It's possible that your computer's security is being compromised by this program. You should scan your computer right away to avoid any further damage.

mscnsz and it's associated process, W32.Rbot.HQ, are known to be a type of spyware. Adware and malware often masquerade as essential files, so backing up your computer before removing files is a very good idea.

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

Since mscnsz.exe is running on your computer, there is a good chance that more malware is lurking. Get a free scan of your computer.