I have heard that if you leave the parking brake down just a tiny little bit, it will deactivate the DRL's. It should be just enough that the P-brake light does NOT illuminate on the dash, nor actually engage the brakes at all.
I know on on my 2003 S10, I deactivated my auto lights and the DRL. One of the guys figured out what pin to bend back, and then replug back in the fuse under the hood, which deactivated the DRL. If someone can figure out which pin it is on the main fuse under the hood, that should take care of it so you can just use your cruising lights.