text: how does a trial version of a software expires .how can i completely remove all files that it created?   try using several of system cleaners, they work great to clean and defragment your whole system. some that i have used in the past were: "registry mechanic", "winxp manager", "ashampoo winoptimizer", "xplite", and "nlite". all of them worked great. in your case i would suggest winxp manager.