AppsLock For BlackBerry. Download it For FREE

This is an app in blackberry that helps you to protect all your blackberry apps with a password. This makes the apps on your blackberry to be accessed only by you.This app has many features, such as:
- locking  of  MMS and SMS
-Locking of call logs and addressbook
- Locking of all application installed on phone memory


Procedure for Installing Appslock
Visit http://appworld.blackberry.com/webstore/content/screenshots/32647?lang=en with your BB Browser
Once installed,  the appslock free icon appears  on your home screen.
Click on it and set your desired  password.
You'll  see a list of apps on your blackberry which you can lock.
 Select the ones you want to Password-Protect from the list.
 Source: OgbongeBlog