> The output html from the mirror is correct, just not
> the naming scheme 0f the *.htm file. If build

A mirror is a collection of files. There are NO query strings on file names.
The resulting filename must be unique. so by default HTT adds 4 digit hex code
and/or -nn to the filename.

You can use <http://httrack.kauler.com/help/User-defined_structure> to convert
some.php?query=x to some_x.html