I got a warning because it was a windows file.
That is a false warning. It is NOT a windows file. You will get to see this if the file is in the \windows folder or in the \windows\system32 folder. But not all files there are Windows files.

Example: You donload my HijackThis Log Analyzer and during install you choose to install it in the windows folder. Although it is in the windows folder it is definatly not a windows file :wink: