Hi,
Cheers for this advice, I will look into the grounding issue. As I mensioned earlier in the post the previous owner of the card nearly murdered the cable - including the ground cable. I have re-made the cable but have improvised on the grounding by using copper wound around the cable and soldered either end...It worked until the miggy was moved. Although I can get a very good image, Touching or moving the cable gives me a blured/unusual colour image.