Could you be more specific as to what you mean by a "VB report"? Is this something you're currently writing out to to text file, or are you using Crystal Reports, or what?
Also, it depends a bit on what you mean by exporting. For example, you could write text to a file and name it with an extension of ".doc". When it's opened, Windows will automatically invoke Word (or whatever your default application is for that extension).
Writing out a PDF file is a different matter, and may require a third-party product. I mean, sure you could just write a text file with a ".PDF" extension. But when the user opens it, the Adobe Acrobat Reader (or equivalent) probably won't like it.