Download Android SDK(for adb/fastboot): http://developer.android.com/sdk/index.html
For more info on the Android SDK and how to utilize it I recommend watching this guide here: http://www.sleeplessninja.com/?p=428
Download the Latest TIAMAT Approved ClockworkMod Recovery: http://forum.xda-developers.com/showthread.php?t=1074979 (You will want to place this within your Android SDK folder in the platform-tools folder)
Download System/Bootloader/and 3G files needed for Root and place them on a micro-SD card. Then install this micro-SD in your Xoom. (You will not need to the 3G file if you do not have a 3G Xoom)
One this prep has been done its time to start the phases. In the phases it will say to download the necessary files, these are already completed within this prep work and only here in case someone is not following this complete guide.
Phase 1 : Unlocking the Bootloader
Phase 2: Installing ClockworkMod Recovery (Tiamat Approved)
Phase 3: Time to Install the Root Files Via ClockworkMod Recovery
Special Thanks to Bigrushdog, Solarnz, Team Tiamat, and just XDA-Community, Android Net including on of my fav Moderators Steady Hawkin, and my viewers!!!