I need a cable modem (not DSL) compatable with comcast service. I'm still on unBEARably S-L-O-W prehistoric dialup (currently at 18 kbps!) because of the price of high speed. But I can't function any longer without... so does anyone have a modem that's not being used so I can upgrade my internet connection? I would be happy to pick up anyplace in Sonoma County. Thanks!