I have a compaq R300Z. When I bought the laptop three or four months ago the Geforce4 420 Go was good enough but I need more power now. I belive that the Geforce4 Go uses a standardized slot. On the compaq webpage it lists the 420 and 64meg 440 being interchangalbe but does anyone know if the Geforce4 4200 can be installed? If no one knows firsthand does anyone have any experience trying to tackle this problem? I will live with what I have but would like to attemp the possible upgrade. Thanks.