The HRD registry storage used by the program installation is: HKEY_LOCAL_MACHINE\SOFTWARE\Simon Brown\Ham Radio Deluxe.Normally you do not need to remove these settings.

The settings used by each user are under HKEY_CURRENT_USER\Software\Simon Brown\HamRadioDeluxe - you can delete these settings with the registry editor.

Be very careful when using the registry editor!

All HRD program use local file storage.

The exact folder depends on the operating system, for Windows XP and user Simon the folder is C:\Documents and Settings\Simon\Application Data\Simon Brown, HB9DRV. On VISTA it is C:\Users\Simon\AppData\Roaming\Simon Brown, HB9DRV.

Be safe - make a copy of the files before deleting this folder and all sub-folders!