See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
D-Link DIR-600 rev B1/B2
DD-WRT Screenshot on the DD-WRT forums (showing 1C:7E:E5 OUI)
DIR-600 H/W rev. B1 hardware are same as in D-Link DIR-300 rev B1
How to open the DIR-600 (see pictures): Remove the two mounting screws that are located under the rubber paddings. The top cover is secured by 4 latches on three sides. Use a flat head screw driver to open the latches to the left and right, then lift off the top cover. Be gentle with these latches as they can break very easily.