For you noobs with a clean system (that means me!), get the following files:
Note I run a 64 bit windows box, get the 32 bit variants if necessary.
You need:
1) Latest version of Kies
www.samsung.com/ca/kies/index.html
download file for me was: Kies_2.0.3.11082_152_4.exe
2) Java:
www.oracle.com/technetwork/java/javase/downloads/index.html
Click on jdk and download. File for me: jdk-7u1-windows-x64.exe
3) android sdk:
developer.android.com/sdk/index.html
My file was: installer_r15-windows.exe
4) zergrush root script
http://xdaforums.com/showthread.php?t=1312859
grab the zip file in that page i.e.
DooMLoRD_v1_UNROOTING.zip
and unzip it to your windows box.
Install 1, 2, 3 in that order.
Find the SDK Manager program in your sdk install directory, double click it, and download/update 'Android SDK Platform Tools'.
Note you can't run the sdk manager program from the command prompt, or it'll complain that directories are being locked.
Now follow the instructions on the zergrush page, i.e. do the 'before you begin' stuff.
Go to the directory where you unzipped the doomlord zip file, run the runme script from a command prompt,and that's it.
To test, download terminal monitor, run it, and do a 'su' then 'id' and see if it says you are root or not.
Good luck!
- Frank