C:\Program Files\Java\jdk1.7.0_04\bin>keytool.exe -V -list -alias androiddebugkey -keystore "C:\Documents and Settings\IBM\.android\debug.keystore" -storepass android -keypass android
Consider your jdk-bin path in the first path place and your home user directory in the second path. For windows 7 it is likeC:\Users\username.android\debug.keystore
Use the above command you will get all the keys.
https://developers.google.com/android/maps-api-signup
http://mirnauman.wordpress.com/2012/01/30/using-google-maps-in-android-development-tutorial-part-1/
http://mirnauman.wordpress.com/2012/01/26/how-to-get-google-maps-api-key-for-android-issues-and-errors-solved/