I am a newbe at this and so I need some help with overclocking and underclocking my galaxy mini. Right now I am using a rooted gingerbread 2.3.4, no custom roms. So my questions are: 1. Do I need a custom rom for doing this? If so then which custom rom is recommended? 2. Which is the best program for this purpose (paid or free)? 3. What else do I need for this purpose (if any)?