EXHIBIT 10.2


                             JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(k) under the Securities Exchange Act of
1934, as amended, the undersigned hereby agree to the joint filing on behalf of
each of them of a statement on Schedule 13D (including amendments thereto) with
respect to the Series A Common Stock, par value $0.01 per share, of At Home
Corporation, and that this Joint Filing Agreement be included as an Exhibit to
such joint filing.

     This Joint Filing Agreement may be executed in one or more counterparts,
and each such counterpart shall be an original but all of which, taken
together, shall constitute but one and the same agreement.

     IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of
this 17th day of January, 2001.


                                            Comcast Corporation

                                            By:  /s/ Arthur R. Block
                                               ---------------------------------
                                               Name:  Arthur R. Block
                                               Title: Senior Vice President Law


                                            Comcast Online Communications, Inc.

                                            By:  /s/ Arthur R. Block
                                               ---------------------------------
                                               Name:  Arthur R. Block
                                               Title: Senior Vice President Law


                                            Comcast PC Investments Inc.

                                            By:  /s/ Abram E. Patlove
                                               ---------------------------------
                                               Name:  Abram E. Patlove
                                               Title: President