I got this stuff to work before, then I had to reinstall XP because of too much 'clutter'. Anyway, I installed the right driver I believe, got the download of MPT, unfortunately I think I told my computer to not try and install the software for my v551, and I believe I need it. Now it will not prompt me to install the software at all. Do I need that stuff? If so how do I do it. If not, what am I doing wrong?