Question: how does a trial version of a software expires .how can i completely remove all files that it created? 

Answer: Try using several of System Cleaners, they work great to clean and defragment your whole system.\nSome that i have used in the past were: "Registry Mechanic",\n"WinXP Manager", "Ashampoo WinOptimizer", "XPLite", and "nLite".\nAll of them worked great.\nIn your case i would suggest WinXP Manager.
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