I'll give it a shot.
From what I recall, Word will only merge with an Access table, not with query results. So I would create a merge table with the fields you want, then do this on the GO button:
Run a delete query on the merge table
Run an Append query using the ClientID as a parameter.
Create an append query with the appropriate fields,
then in the ClientID column add this,
[Forms]![frmMyForm].[cboClientID] or whatever the name of the form and control is.
Then launch Word.
Do you need more help?
mmcdonal
Look it up at:
http://wrox.books24x7.com