You cannot do it as part of the mailmerge process.

You should use Edit Replace on the data source to replace all of the
commas with ^p (paragraph returns)

--
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

"funky Hamsta" funky wrote in message
...
When making labels for posting letters, I have a data field in my excel
table
which has the address data in the following format:

" Mr A B Bloggs, 12 Nowhere Raod, Somewhere, Shireshire, SN12 4UP. "

How can I point word mail merge at this data field and get it to insert a
line break where it sees a comma? so that there format becomes:

Mr A B Bloggs
12 Nowhere Road
Somewhere
Shireshire
SN12 4UP

Any suggestions/solutions greatly appreciated.