Hdmi To Composite Adapter RCA Composite To Component Adapter/cable - Where Can I Find One?

RCA composite to component adapter/cable - Where can I find one? - hdmi to composite adapter

My mother has just an LCD HDTV. It has 4 HDMI and 1-component connection. Output of your cable box has composite (yellow, red, white). There is no upgrade to HD cable, but that connected to the cable box. I can not find a composite cable adapter component. What do you do and where do I find attractive? Even better, if anyone knows a composite to HDMI would be better.