How to turn off Daytime Running Lights

Hi, I have a 2004 Ford Expedition and I would like to know how to turn off my datytime running lights where at night time I will manually turn on my lights when I want from the side of the car. Thanks.

anyone?

Here is a page that relates to F150 trucks, might work with Expeditions??

http://www.voicenet.com/~storm/drl/

There is some other information at:

http://www.lightsout.org/disable.html#Ford

I couldn't find anything specific to Expeditions, sorry about that.