I decided not to mess with the Registry - there were too many entries for RIM and Blackberry (even though I had uninstalled Desktop Manager).

So I decided to install a copy of Desktop Manager v. 6.0.0.43, and it works as well or better than the v. 5.0 that I had before. This is a different computer than I had before, and I am now running Win 7 which was probably not the case previously.

Thanks for the help!