[ScrapMaker]

Like I said, you should be able to save as uncompressed and NON-binary, from PIMBackup's options.

Then you can edit it directly--but be careful... if you restore it back to your phone, it will MOST LIKELY think that ALL of the messages in the file are brand-new, and you will find yourself with a host of duplicate messages. This is true, even if you have no messages on your phone--Dashwire will think they are new as well--and create online duplicates that are nearly impossible to get rid of.