Answer 1

Hi shrawn,

I think a 3rd party can help to solve it.

http://www.bing.com/search?q=sharepoint+2007+doc+to+pdf+conversion

What about use Development. Please take a look. http://social.msdn.microsoft.com/Forums/en-US/sharepointdevelopment/thread/3da8c842-df38-4327-be49-66b407d75fbe

Best regards.

Answer 2

Have a look at the PDF Converter for SharePoint. It allows PDF documents  to be created for most popular formats including Word and InfoPath.

Conversions can be controlled via automated workflows or from your own code using Web Service calls.

Answer 3

Hi Shrawan,

yes you can conveet doc fil to pdf  file in moss2007 by using MossDocumentConverter a third party tool need to be installed :

find here :http://docconverter.codeplex.com/