Step 2: Install Urdu Phonetic Keyboard (v1.0)
Download and run Urdu Phonetic Keyboard Installer.
Windows Vista / 7
If you are using Windows Vista, after installing the above keyboard you can type Urdu on your Windows Vista Computer. To switch between Urdu and English keyboard, you can press Alt+Shift. Or on your taskbar you can see EN or UR and click on it to select the language as shown in this figure:
If you are using Windows XP, you need to follow step 3 to enable Unicode Urdu in Windows.
You can also download and print this Urdu Phonetic Keyboard Layout for your reference. This page explains which key has alef, bay, pay etc. Here is the low resolution image: