Link
How to root galaxy 3 froyo?
Link
Superoneclick
Instructions:
1) download the 2 things on top
2) make sure you can access adb in command prompt? If you don't know what is adb then go google it.
3) make sure u have NET framework 2.0 installed
4) On the Superoneclick and press root. If sucessful, the bottom of the log will show "OK" and ask to test for SU (aka super user)
