I have a Motorola SurfBoard Modem SB5100 and a Lynksys WRT54G router that don't

seem to work together? I have Comcast and for about as long as I have had internet with them I have had this problem. I keep losing internet connection, requiring power cycling of the modem. I checked it out online and the suggestions online don't help. I swapped modems so that is not the problem. Does anyone have a known router model and brand that works with this model of modem?
I have had this combo since january and this has been an intemrittent problem since then. The advice I asked for is not for you to tell me that there is no such thing as incompatability between devices. The thing I asked for is specific routers that people use with this EXACT model of modem.