The common method for pre-populating a PDF on a web site is with an FDF file. You simply point the user to the FDF, instead of the PDF. You can easily create an FDF file by exporting data from the PDF to a local file. Edit the FDF file in a text editor to ensure that it's file specification points to the PDF on the Web. Then upload the FDF to your site. You can also create FDF files at runtime from a server script. Search for the FDF toolkit on the Adobe site.
Cheers,
Thom Parker
WindJack Solutions
[url=http://www.windjack.com]www.windjack.com[/url]
The Acrobat JavaScript Reference, Use it Early and Often
[url=http://www.adobe.com/devnet/acrobat/]http://www.adobe.com/devnet/acrobat/[/url]
Thom Parker
The source for PDF Scripting Info
www.pdfscripting.com
Very Important - How to Debug Your Script