If you want to be sure that all your settings etc are backed up, and you have the space on your backup device, I recomend that you backup the Pegasus Mail install folder and all sub-folders (normally c:\pmail). If you dont have the space, you should backup all the files in the folder given to you by step 1 in David Harris's instructions above:
[quote user="David Harris"]
1: Run Pegasus Mail; choose "About Pegasus Mail" from the "Help" menu
and click the "Info" button. About four or five items down you'll see
an item called "Home mailbox location". Write this directory name down
Not 100% sure on the Symantec front (Nortons) but it seems that the latest def is working ok now.