1. Create an avd running 2.2 (froyo,plenty of places explain how to do this so I won't)
2. Download the file (attached below, root files included)
3. Unzip to a location that's easy to remember and find.
4. Load your emulated phone (allow it to load fully)
5. enter this command in a command prompt/terminal window (make sure you „cd“ to the directory where you extracted the files)

   adb pull /system/build.prop

6. Remove or comment „ro.config.nocheckin=yes“ (no quotes, might be able to just change it to „no“ but I haven't tried it that way)
7. enter these commands

adb remount
adb push build.prop /system/build.prop
adb install GoogleServicesFramework.apk
adb install Vending.apk
adb install Gmail.apk (optional but sometimes signing in here lets the market sign in)
adb shell rm /system/app/SdkSetup.apk

zdroj:

1. http://forum.xda-developers.com/showthread.php?t=821742