Can't get Canon PIxma MX700 to work over my wireless

HI,
I'm running Leopard on my MacBook and just bought a Canon Pixma MX700. I'm having problems installing the printer over the wireless. It will recognize the printer via the OSB if I hook it directly to my computer, however when I hook it to the airport extreme it only recognizes the printer function via Bonjour. I need scanning/faxing and pretty much everything to work on the wireless, and know it can be done b/c reviewers who have bought this printer said they could make it work on their macs.