Rooting Samsung Galaxy Note GT-N700 On ICS - How To Root Samsung Galaxy Note On ICS
Galaxy Note Root
Samsung has officially released ICS update for German users. The good news is that we have managed to install Samsung's ICS German update on non German Galaxy Note without rooting. That's correct, you can install Android's ICS update on Galaxy note on non German Galaxy Note. This is Samsung's stock firmware and installing it will not void your warranty by any means. If you haven't already upgraded your 2.3.6 to ICS, you can follow the instructions posted here
If you have updated your galaxy note to ICS and wish to root your device, XDA contributor Dr.Ketan has already shared the instructions of rooting Galaxy Note on ICS.
IMP : Rooting Your Device Will Void The warranty. You Can Proceed At Your Own Risk
You can follow the original post on XDA developers page for instructions on rooting your device.