Fastest way to get the updated (2.3.6) Ascend 2 rooted (if you have the right USB drivers for the phone) is to download FastRoot Plus and run that. It'll give you a step by step menu to root your phone. It'll put on CWM for you first then you run the program again to root it. It will automatically reboot your phone into the correct mode for you too once CWM is installed.