How do i change my name display on Honda civic si?

I recently got a 2007 SI. When i turn on the car Diana's si is displayed where the clock and radio are. i do not have a owners manual. The car doesn't have a navi system just plan dash looks like this http://z.about.com/d/cars/1/0/m/4/1/jf_08civicmugen_Dash.jpg