generally what I do when I am wondring what a specific file is I justgoogle it. Just search for the exact file name and almost always you will get a match. and generally if you dont, its a bad thing. (there are exceptions, but unless I was the one who created the file or i know exactly what it is for I get rd of it.) and dont always trust the AV and anti-spyware programs, they have a tendancy to mark specailty (i.e programs that have genuine uses but have been used for wrong in the past) as bad so they delete them.