Hello, thank you very much for your reply. As I have mentioned that adobe acrobat is partially working with my Windows 7. Also a nice feature of Microsoft Office Word is that it has a createpdf button, hence any document created in word can be easily converted to pdf. I am eager to utilize this full features of Windows 7. That's why I want to fix my problem first. If any one gives me some suggestions regarding the matter, it will be highly appreciated.