on your user control panel (User CP) just click on Signiture and then just type in the box, however i'm not sure if you can use it until you become a paid member.
And by the way you get a very good deal on insurance! i have to pay £1100, i'm 20, 2ync, and live in a nice area!
cant put my car in the members section so though i would post a few updates over the last few weeks the car has undergone a few changes got a FMIC, clear indicators, kyb shocks and eibach springs new clutch