yes I checked out the clockwork mod sticky thread but is confused as hell right now because I didn't know what step to start from after this root method we using in this thread. I'm lost right now..
So lets break it down. You followed all of those steps, so now you have root and superuser control yes?
In which case, to flash custom roms. Read all of this first.
1. Download clockwork rom manager from the appstore.
2. Run Clockwork and install the custom recovery (first option)
3. Back up your current rom (scroll down option 8)
4. Phone will restart after step 3, Download your favorite ROM, and put it on your SD card.
5. In clockwork select the option "install rom from sd card"
6. Allow it to takes its course, phone will restart after.
Thats all folks.
Also if you want to try and keep your settings, download "Titanium" and back up all apps and data first, then do step 1. (in titanium press menu, then batch, select "back up all apps and user data")