Well I did just as you told me, after moving the mail I wanted to another foler closed PM and then opened Explorer.  Went to the Mail/ folder that held the *.CNM files and removed/Deleted them.

Had a project to complete at that point so closed down everything.  Now am back and checked my mail and there were about 6 copies of that message mixed in with some fresh email.  Forget it, about saving any email, I went in and deleted those folders again including the fresh email.  That seems to have done the trick, I HOPE!!  Only TIME will tell . .

There is a message that just came into my system this morning, "From: IIIIIIIIIIIIIIIIIIIIIIIII(goes on for ever) with a Tilde [~] over the top of each 'I')" and the "Subject: (is the same way)" cannot do anything with that message, it will not Delete, cannot Move, there is a message in the body, but; seems to be from Pegasus program itself, a quote follows:

"This message contains binary or non-textual data that cannot be previewed within Pegasus Mail.

   Filename:   ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ

You can work with this file in the message reader's 'Attachments' page."

Now how will I be able to remove such a BEAST, have also attempted to get SPAM Halter to take over this and nothing takes place, some time there will be several (3) then another there are many (10 or more) at this time there are 6 copies . . 

P.S. Just took a magnifying glass to get a closer examination, what is over each letter appears to be three (3) pixels from upper left to lower right diagonally . .

The file location /pmail/mail/folder    you keep store your messages.... any new e-mails not filed away will have a file name that ends *.CNM

 Delete these and your message should be gone next time you refresh your inbox.  

 I got one that is causing Pegasus to crash when the program loads so it's a lesson well learned. 

If you fear your effort, back up before deleting anything!