I've been running jt1134's cm7 for 2 weeks straight now. Only issues for me is no camera or mms. Other than that, its a real smooth running rom for me.
If you were to look in your settings and you saw tsm parts listed you would know its CommRom. If you looked in settings and saw CyanogenMod settings it could CyanogenMOD 6.2 or 7.0