Establish Peer Relationship with Comcast

Hello all, I was wondering if anyone on the list works for Comcast or could help me get in touch with them to discuss the requirements for establishing a peering relationship. So far our efforts to contact them have not resulted in talking to anyone except folks who can sell me a cable-modem circuit :). Any help would be greatly appreciated. Please e-mail me off-list at darin _at_ peznet.net Thanks, Darin