Hi Jeff,,,,lash out a buy yourself a Canon Speedlite Transmitter ST-E2...This is one brilliant device for triggering Canon Speedlites using Canon DSLRs..You mount the ST-E2 on your Canon's hotshoe and it will trigger two Speedlites upto 15 meters away..You can even vary the output ratio of each Speedlite by upto 4 stops...
This is one device that is aways in my camera bag,,I wouldn't use anything else..

Jurgen
Australia