lputman: No, there were no onboard flash. I use the Cactus V2s radio triggers, and the trigger itself occupies the flash socket on top of the camera. Both flashes on each side were connected to the radio receivers and triggered that way (i.e. no ETTL, all manual flash settings.)
If you want to get into off camera flash photography I can recommend using the Cactus V2s triggers (try googling for them). They are super cheap, and if you try out a simple antenna modification (can also be found on google) you can extend the range and performance a lot. Buy a couple of old 2nd hand flashes, like the Nikon SB-24 or SB-28 (doesn't matter if you are a Canon user or otherwise, the radio triggers don't care, nor does your camera). Then let a whole new world open up to you. Interested in learning more? Then there is one site and one site only for that specific type of photography and that's
http://strobist.blogspot.com.
Good luck. :-)
Jesper Revald
P.S. Thanks for the kind words everyone!