I created a post in Q&A for this, but if anyone is having problems, read this, and you should get through it and get root if you are on a non-rooted, stock ICS T989.
First off, you will need to download the Galaxy II Toolkit for the T989.
This is by ajster1989. All credit goes to him.
After you download and install the toolkit, you will need to connect your phone.. Then open the program. It's default path is C:\Program Files\SGSII Toolkit. After you connect your phone and run the program, click T989 as your device, and it will download the necessary files to your computer in order to do everything.
IF YOU ALREADY HAD THE TOOLKIT INSTALLED, YOU WILL NEED TO DELETE THE ORIGINAL T989 FOLDER THAT WAS INSTALLED. IT IS LOCATED AT C:\Program Files\SGSII Toolkit\Devices. WHEN THAT IS DELETED, START THE TOOLKIT AGAIN AND IT WILL DOWNLOAD THE CORRECT ICS DATA.
After you are to the main screen, click on 'Flash Clockwork Mod HARD/TOUCH Recovery. I recommend the HARD recovery, as it is compatible with most roms.
It will then open Odin and your phone will go into download mode. Click on PDA, then go to the C:\Program Files\SGSII Toolkit directory again, click on devices, then T989, then Recoveries. Select the 'Hard' one.
Your phone will then reboot. You are not quite rooted yet.
When it is rebooted, connect your phone to USB storage, and open your External SD Card, and copy the root.zip to it. This is located in C:\Program Files\SGSII Toolkit\Devices\T989.
After that is copied, reboot the phone by holding down the power, VOLUP and VOLDOWN side buttons. Hold them all at the same time. Hold them until the phone reboots, and you go into ClockworkModRecovery.
When you are in there, use the Volume Down button to scroll to 'Install zip from sdcard', and click on the root.zip that you copied earlier. It will ask you if you are sure you want to do this, click yes. It will then install SuperUser to the system. After that is complete, click 'Reboot System Now'.
Your phone will reboot, and congratulations, you are rooted!
Just trying to help, as I had troubles at the beginning.
Good day all!