I did a google on these today but there are lots of tools. I tried a few. But it would be a great help if anybody already has experiences with a good tool. Please share you experiences if you have used any such tools. Thanks
I love this one: http://www.download.com/Win2PDF/3000-6675_4-10045636.html?tag=lst-1&cdlPid=10662484 It installs as a printer. You just click File > Print and it converts whatever document into a PDF.
I like OpenOffice - there's no conversion required for .doc documents. Just write up your document and press "export as PDF". You can even encrypt the PDF if you like.