Is your video feed live-to-air? It's about the only time I'd even think of using a genlock. My advice, spend the $35 on something better ....like playing EVE-Online or smoking grass. :-D
Subscribe to the EVE-online one :-) been playing since 2004 and still fascinates me - probably because it reminds me of Elite - and that is a game I really loved playing on my A500