Originally Posted by jakfoto
Check out Pocket Wizard. Seem to be the trigger of choice for many folks.
I think most of us use PW some may use Quantum-- they're expensive, but they work. There are lots of cheaper options out there and if budget totally prevents you from considering them, you'll still have plenty to choose from.
You can take a look at EBay and find remote triggers as cheap as $20. Of course, you may also be lamenting misfires and failure to fire at all that so many who buy the cheap units experience. But, you won't be out much.
If you're firing heads with sensors built in, then you need only buy 1 receiver. The other lights fire when they see the one with the receiver fire. That's how I set it up. My receiver is always on the main light to be sure all other heads see the flash.