How to password secure files and folders

Hi,
Does anyone know how to password protect folders/files?
A simple way plz
I tried to zipp the folder but cannot find the place where I am supposed to password it.
I also tried hamdys version but cannot find properties where they are supposed to be.
Johnwills version looked complicated
I am norwegian and a girl: keep it simple, guys

 

Hello and welcome to TSG

How to Set the My Documents Folder to Private
To set the My Documents folder to Private: 1. On the Start menu, right-click My Documents, and then click Properties.
2. Click the Sharing tab, and then click to select the Make this folder private so that only I have access to it check box.
3. Click Apply, and then click OK.

However have a look here for a program

Androsa FileProtector
http://www.snapfiles.com/reviews/androsa-fileprotector/t_androsafileprotect.html

I have just tested it and it works