Bnc to component cable connection question

[bambamrl]

I want to get a cable that has RCA component (Y PR PB red, green, blue) on one side and on the other side of the same cable a BNC connection. All I've seen being sold are vga to vga, BNC to vga, component to vga, component to component, etc... Is it possible to get this cable connection by using female to male or BNC to RCA component connectors to make the cable? I want to use this cable for High definition, and want to connect from my HD cable box to computer monitor. I don't know if the signal will go through to my monitor, but I still wanna try. I ALSO currently have a RCA component to HD-15 VGA cable that I can try it with, I use this cable from HD box to HD Television since I have the Y PR PB connection of the TV being used by the DVD player for progressive scan.
Thanks.

[BJ_M]

this is a pretty common cable acually , or just use rca to bnc convertors ..

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=587154