Imitating Mail Merge

I have an ASP intranet application that is required to produce Word documents merged with data from a database.I originally looked at automating Word's mail merge capabilities, but nixed that idea since I learned it's not a good idea to try to automate Word on the server

decided to have the Word templates saved as RTF files and to write a parser/merger myself.since Word produces such complicated RTF code,until we decided that we were going to combine multiple templates into one final Word document with, potentiall, different header and footers for each section/template doc.

I'm having a problem figuring out how to get sections inserted into the combined RTF doc, so I'm thinking perhaps I should rethink my solution.how to produce database merged documents from templates created by users on a Web server? We may have some budget, sothird-party tools would be welcome, as well.