Its like a dream come true if you were able to convert your documents to pdf before sending them to anyone. Reason they are not easily tampered with and portable.
Here is the tool which does that and that too with ease. Its a software called pdf995. This software creates a printer by name pdf995 on your windows installations. Once you print your document on this printer it will ask you for the location to save your pdf file.
So what you have is a pdf file of what you might have got on the paper. Its a must have for me and I always keep it in my usb flash.
Enjoy making pdf doc for free . . . . . .