It is always been a very painful task to convert pdf to doc and vice versa. To make it easier take use of the following tools
Offline tool
cutewriter
This tool can be used to make easier doc to pdf conversion for free. after installing for converting in ms-word goto file and then print insted of printer choose cute writer in the printer name option and then select print thats it you are done now u can see a pdf of the doc on your desktop
Online tools
koolwire 
This website gives a wide varity of options to choose with. pdf to doc. After uploading the file and the file gets converted and then mail to your mail box.many other conversion options are also provided.
ZamZar
Zamzar another free online file conversion site similar to the above one. This gives you an option of converting pdf to image files too..
