Brian,
Further to my woe of altered settings it appears something is stopping me from accessing the unit setting box in control panel. I have been using metric and now it is imperial. I initially was able to reset the comport and select station type but everytime I select units the computer will not allow any activity. I get a tone and no mouse activity. It now does that every time I restart the program so no longer can access menu. Have to use task manager to shut down. Seems there is something in background stopping me. Any ideas?