Could you not post onto someone else's thread with a totally unrelated question? Just that it gets really confusing with 2 topics.

Is your LW starting only when you turn the computer on, or does it pop up all the time & refuse to stay closed?
If it's starting only the once when the computer's turned on... tools > options > system startup. Untick 'run at system startup' & apply.

If your LW's popping up constantly then it's a virus & point 4 below deals with it
WARNING: Viruses on the network you should be aware of
If you go to Norbiesworld, register & follow the directions for free computer help then Norbie will be able to help you to get rid of the virus.
Always use your AV program to scan a downloaded file before opening.