Dude you answered your own question. I'ma super noob and i know that if you accepted that OTA (over the air) 3.70 update that installs all that extra nonsense you cant root by unrevoked right now. You can do it using adb shell but i wouldnt recommend it. Its a lil confusing.
Check your phone. Hit menu>settings>about phone and look at your software number. If it says 3.70 your currently out of luck...
BTW find out which hboot you have too. Power off then Hold the power and volume down button til a white screen appears. The second line should say Hboot 0.97.00 or 2.02 or 2.10.
A 2 anything means you have to wait.