If you have microsoft removal tool on your computer then it may be out of date. The way to find out is open it. A window will open and say that the program is out of date that it quit working July 31, 2005. Just go and redownload it. It will take you thru some steps to make sure the version of windows you are using is real but that is all it cost. If you do't have it installed you REALLY need to.