forget the above, it looks like the version of mscomm.ocx is all from 1998 anyway.
I downloaded the pro-trak software, extracted it and it runs ok. You could try doing that again.
failing that, have you run windows update recently? (assuming xp)
and failing that
start, control panel, system, click hardware tab, then device manager. do you have an ! or ? next to anything? (or any other strange yellow symbols). If so, remove them and reboot..xp should try to re-install anything it finds
dont blame me though if you break your pc