Hello,
VGA has not been natively designed to support TV-out features; therefore we do not validate the usage of any type of converters or adapters to connect a TV to a system with a VGA interface.
In most cases, you want to use a TV cable with the same kind of connectors as the TV-output port connector on your computer. For example, an RCA-to-VGA cable is not supported. An S-video-to-S-video cable is supported if your computer has an S-Video output port.
More related information is available on this article:
http://www.intel.com/support/graphics/sb/CS-004653.htm