Only uploaded via request 🙂
My phone in this case was already unlocked, but I have done exactly this to unlock it on my mum’s LOCKED vodafone SGS.

I hope this video helps you!
Remember:
-Root FIRST
-Then install Busybox if not done already – Apply it
–Install the Galaxy S unlock app

-Do as I did in the video
-Phone will reboot – You are now unlocked – try checking it with another SIM, and let me know how you get along!

More technical questions, please email the developer (found on the market)

Credits to AndroidGalaxyS in making the initial video on how to unlock the SGS – I only did it upon requests 🙂

Enjoy!
–TotallydubbedHD