From Wikigogy

If you are a logged in User you can edit your my preferences (contact email, edit box size, history/recent changes display style, etc.)

Mostly it is self explanatory but mysterious preferences will be explained below.

Signature

Please sign talk pages with --~~~~.

By default that gives your username linked to your userpage plus a date stamp. Eg: --Roger 01:17, 22 February 2007 (CST)

To make it fancy (please keep it simple, courteous not garish, but have fun). Eg: --Roger ^talk 01:17, 22 February 2007(CST)

Under your my preferences > User profile tab:

1. select [x] Raw signatures
2. in Nickname, type wiki markup to create something like this maybe

   [[User:Yourusername|Yourusername]] <small><sup>[[User talk:Yourusername|talk]]</sup></small>

   replace "yourusername" with your correct username.
3. click Save

This effects only your signature on pages you save after you set it.