Free cable modem: D-Link DCM-202 is Comcast compatible and in good working order, AC adaptor included.
Nothing wrong with it, we upgraged our home wireless network and decided to do the modem at the same time. Serial number/MAC address all on the bottom sticker for easy comcast turn-on. Installation disc included (but I dont think you need it for Comcast to recognize it).
Please post here >and< email me at address below if you want it.
bkjamjets at gmail dot com