Updating Signature / Profile in forum

I've been unsuccessful in finding where I go to make changes to my personal account, including my signature for forum posts. Could you point me in the right direction?

Scott Gast
S2 Software, Ltd.
Texas, USA
Delphi 2010 / Intraweb 10 / TMS Intraweb Component Pack Pro Script Edition

Other than the user name that appears, there are no customization capabilities.