[dba-Tech] Convert Word docs to pdf

I need something to convert doc files to pdf -- and I'll be doing so 
regularly. Because of the confidential nature of what I'm doing, I'm not 
comfortable doing this online or sending it to someone to convert for free. 
Free would be great, but only if I can download it and use it on my system.

If anyone has a multi-license to Acrobat and would like to sell me a piece, 
I'd be glad to do that -- if it's legal. I don't need a lot of 
functionality -- just need to convert docs to pdf and to be able to comment 
in an existing pdf file. I have Acrobat Reader, but you can't do anything 
but view files with it.

Acrobat wants to charge me $100 a year just to convert files -- little 
pricy, but a single license for Acrobat's pretty pricey too, for what little 
I'm going to be doing with it.

Susan H.