Placing password protection on files...??

How do I place a password protection on certain files and folders on my computer ??

Is it possible at all ??

If it is, do I need to purchase or otherwise download\install any softwares in order to achieve this ??

Is there anything else I should know ??

Placing password protection on files...??virus scanner

http://www.protect-folders.com/ You can dowload a 30-days trial for free or purchase the full version for ~$40

Or there is an absolutely free software, looks good: http://www.cypherix.co.uk/password_prote...

Placing password protection on files...??anti virus software

Make a Compressed Folder then drag all the Doc's you want to put in it then in the file menu click add a password.