According to http://developer.android.com/google/play-services/setup.html
"A compatible Android device that runs Android 2.3 or higher and includes Google Play Store."
it should be possible to use the Google play services. I tried it with the normal one and the one for Froyo in the SDK Manager. But both results in missing the services, when running the APK on the device (Sony nsz -gs7).
Are Googles informations misleading or am I doing something wrong?