It works perfectly but as a reminder to those having sets with 3 buttons disabled :

1. You must use this fix , go onto download mode - NEVER , NEVER use ADB from terminal to go into download mode. There is a high chance you will brick your phone especially if you want to try Froyo roms. I noted if you try ver 2.1 roms , no such issue
2. Whenever you change rom, you must reapply this fix

This is from my experience bricking the SGS three times !!