Modify an Existing Letter
Before you can use a letter in a mail-merge in RR5 it has to be registered. To avoid having to go through this process, which which in any case would soon result in an unmanageable number of letters in the RR5 list you can instead modify an existing letter.
The letters registered in RR5 are in the folder C:\RR5\WORDBITS They are Word documents, having filenames of the form xxx.doc
You can open one and edit it in Word by going to C:\RR5\WORDBITS and double-clicking the filename of the letter. Make alterations to text as required. Don't change the merge fields unless you are confident! (If you need to do this see details given in Register a new letter section)
Save your new letter, keeping original name