Click on "Languages" tab and check on the box which
says "Install Files for complex scripts".
This method will ask for Win XP CD. Put the CD in the CD drive
and let the installation begin.
Once the installation is complete boot the system if required
and again go to 2nd step.
Now click "Details" tab. Click on "Add" to
add the languages of your choice.
Click on the "Advanced" tab in the "Details"
Uncheck the "Turn off advanced text services" in the
Restart you machine.
A small "EN" will appear in the system tray. Left
click on "EN" and choose the "PA" to start
typing in Punjabi.