If you like to try out this new mobile operating system on your Windows computer, here is a brief and precise tutorial with screenshots.
1. Download and unzip the Android SDK. Run the SDK Setup exe file, then select Available Packages option shown on the left column (see screenshot).
2. Now expand ‘Sties, Packages and Archives’ from the right column and select SDK Platform Android 2.2, API 8, revision 1. Then click Install Selected button.
3. After finishing the download, select Virtual Devices option from the left column and click on the New button. Enter a name for your virtual device and choose the Android 2.2 package from the Target drop-down list and click on the Create AVD button.
4. Now you can see your new Android device, running 2.2 in the main Virtual Devices panel (see screen-shot above). Select it, and click on Start to launch the new OS.
In my system, it takes few times to fully load. However, it was a good experience to try out this new Android 2.2 (Froyo) OS on my Windows.