Why won't my Wii connect to this TV?

I have a 1999 GE Stereo Monitor (SN:32GT660) and a Comcast RNG200 Cable Box, when I hook the wii directly to the television it will not work, I only get white fuzz. Keep in mind I don’t have the actual remote for the GE TV. But I noticed on the back of the comcast box there are input connections available, is there a way to hook up the wii to the cable box and somehow switch inputs within it? Please help!