So I want to get into off-camera lighting, this time without spending too much money. I already own a 430EX, so the flash part is (for now) taken care of. I'm looking at the Cactus Wireless Trigger V2 mainly for the price and I'm having some trouble understanding how it works - as I understand it, the transmitter goes into the hotshoe on camera and transmits to the receiver which is connected to the flash via a cable, but my 430EX doesn't have any input jacks on it. According to the Cactus site that flash is compatible with their stuff. Can someone break this down into layman's terms for me?