Not going to work, I'm afraid.
If you want to create DOC files, with all the appropriate formatting, then you are going to need something rather more sophisticated than just Stream.WriteLine of your text. Just giving a file the ".DOC" extension does not mean that teh system handles all teh details for you. It doesn't.
There is a simple solution here: http://en.allexperts.com/q/Visual-Basic-1048/Writing-Word-file-Vb.htm
] but it relies on you having Word installed on the machine the application runs on.