I've used 100" dvi cables several times.
The orange optical cable works perfect, also I've used a very thick "normal" cable that works, I don't know name of the product.
The oragne one has electronics in the conector, no other electronics needed.
BUT, be carefull with the cable, especially the connectors, they are fragile, one foot on it, and you are f¤#ked.
-Kasper