Stock Kernel Root para JVZ...
ROOTED! I9000XWJVZ - Gingerbread (2.3.6) - CL: 762604 - B.Date: Fri Nov 25 KST 2011 - Download HERE!
Instructions:
1. Flash zImage.tar of choosen kernel using odin (you will find it in package)
2. enable usb debugging in settings->applications
3. while still connected and odin/kies is turned off, run RUNME.BAT (also in package)
4. Install latest Superuser.apk from market!
5. Profit!