How to disable Mobile Data on Android

Question

Quick back story before someone tells me to buy an app. =)

I just got an EVO and it chews through the battery fairly quick. I downloaded JuiceDefender to manage

Answer 1

Notice that "android.permission.MODIFY_PHONE_STATE" is no longer supported for Android 2.3 and up.

why 2.3 version of android does not hava android.permission.MODIFY_PHONE_STATE ? and what is the solution for this?