Does anybody have any conceptual guidance on how to handle this e-mail
merge scenario?

I am starting with two documents an Excel Spread sheet containing
client statements and a Word document containing personalized
statement cover letters.  The Excel spreadsheet has one client
statement on each tabbed worksheet.  The Word document has one
statement cover letter per page.

I need to perform an e-mail merge that e-mails the matched statement
and cover letter to the appropriate e-mail address.

Anybody got any advice on how to approach this?  Is there any off the
shelf software that can handle this?

Thanks,
John