How to use ProGuard with NetBeans 6.7/6.8?

Does anyone know how to integrate ProGuard with NetBeans 6.7/6.8 ? I've been using NetBeans for many years, but now I want to use ProGuard, is there a way to add it as a 开发者_运维百科plugin and just click a button to start obfuscating my programs ? I know it exists in NetBeans Mobility Pack, how come it's not in the regular NetBeans version ?

A simple web search gave me

• http://netbeans.dzone.com/tips/obfuscating-netbeans-java-appl
• http://blogs.oracle.com/geertjan/entry/obfuscation