, you got to have Adobe distiller or some minimal s/w from adobe to do that using ASP. There were a lot of tools like HTML2PDF, HTMLDOC available, but I am not sure, if theose can be used with ASP to generate PDF files from the data you generated onto your browser.
After a long search, I think you can do that in many ways.
(Should be the best one)
Is the library for creating PDF files from Visual Basic, ASP, Delphi, Visual C++, VBScript (3.6M)
Download this EXE and install, you would get examples and guidance on how to do it.
This too is similar to the one above.
This is another link for creating PDF from WORD. Though you are not for it, you can have an idea about it.
Hope that helps in a way.