When you are in the User CP, at the left you are going to see a panel titled Control Panel. Then you'll see like a sub panel called Settings & Options, and the first option there (which is, Edit Signature) is the one you need to click to be able to change your signature... remember you need to know vB Code to make a kewl one
to get the codes
Odi et amo. Quare id faciam, fortasse requiris.
Nescio, sed fieri sentio et excrucior.
~Harrie's proud brother!~