http://www.cablewholesale.com/specs/40s1-09602.htm
This is an amplified splitter so you are guaranteed not to lose any signal strength/quality in the picture, although, there is a simple s video splitter here.
http://mcm.newark.com/NewarkWebComme...KU=24-7835&N=4
Personally I have split a 3 ft cable without a problem but I did not care about quality, but anything past 25' I would get an amplified splitter.