Sounds like you are probably trying to perform a "multiple items per
condition (=key field)" mailmerge which Word does not really have the
ability to do:
See the "Group Multiple items for a single condition" item on fellow MVP
Cindy Meister's website at
http://homepage.swissonline.ch/cindymeister/mergfaq1.htm#DBPic
Or take a look at the following Knowledge Base Article
http://support.microsoft.com/default.aspx?scid=kb;en-us;211303
http://www.knowhow.com/Guides/CompoundMerges/CompoundMerge.htm

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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP
> We have data in Excel with name and address in one column and several loan
> numbers in another column. Some people have several loan numbers assigned
[quoted text clipped - 6 lines]
> letter for each loan number. Any help is appreciated, thank you!
> jb