install android 2.2

download android sdk: http://developer.android.com/sdk/download.html?v=android-sdk_r06-windows.zip

unzip android-sdk_r06-windows.zip

add these to system path:
C:\android\android-sdk-windows\tools;C:\android\android-sdk-windows;C:\Program Files\Java\jdk1.6.0_20\bin

manual create two folders - platforms and add-ons into the root of android sdk.
ex. C:\android\android-sdk-windows

execute C:\android\android-sdk-windows\tools\android.bat

Go to Settings and modify https to http.

Go to "Available Packages"
check "https://dl-ssl.google.com/android/repository/repository.xml"

Finally,

Reference:
http://developer.android.com/sdk/index.html