I have a Pentax AF 360 FGZ flash and a Canon 7D camera. Different hardware I know. But I want to be able to fire the flash, possibly using a remote trigger that would allow me to remotely take the shot and fire the flash as well.
Aside from the wireless P-TTL "smart" optical triggering with Pentax gear, the AF 360 FGZ has a "dumb" optical slave mode (Slave 2) built-in that works with any simple flash burst (read: will work with any brand camera gear). Set the 7D's pop-up flash into M mode (to avoid sending out an eTTL pre-flash), and it should trigger the AF 360 to fire in sync. You will, of course, have all the range/line of sight issues that optical slaving does. But you don't have to buy radio triggers to use this flash off-camera with your 7D.
From this pentaxforums post, to place the flash into the "dumb" optical slave mode:
Set the switch on the right side in the upper position.
Hold "light" button down for 2 seconds.
Press the "S" (select) button to toggle between Slave 1 (Wireless P-TTL) mode and Slave 2 (Optical dumb slave) mode.
Press "light" button to accept and exit.
Any flash burst (even one from a P&S) should trigger the flash remotely.
To get the camera shutter to operate remotely, however, you do need a shutter remote of some kind (cable release, radio triggers, or an infrared remote) as a separate signal. You can only trip the camera shutter via the camera hotshoe with Canon RT remote-flash gear (e.g., 600EX-RTs).