Creating Backup File
A backup file is a file that looks like "Example.IPD" and is created using the official BlackBerry Desktop Manager software that comes with your phone. It is always good to create a backup of your BlackBerry anyways, since BlackBerrys can sometimes crash and lose all of your settings and data.
Usually you will find it under the Start Menu => BlackBerry => Desktop Manager.
You can also download BlackBerry Desktop Manager for free from the BlackBerry website.
Once you run the Desktop Manager, click on "Backup" and follow the steps. Try to remember where you save the .IPD backup file because you will need it right after.
Connecting with USB Cable
Please create a backup file from your Blackberry first. Yes you can use the Berry Extract program while plugging your Blackberry cellphone via USB.