I have handled this in two ways with my Maxxum 5D:
(1) attach an FS-1100 to the hot shoe and then an ISO hot shoe-to-PC adapter to that, and then just plug in the PC cord (only if you know that your strobe's voltage is low enough!); or
(2) use the built-in flash with -2 EV flash exposure compensation, or a shoe-mount flash firing away from the subject, to trigger an optical slave (a Wein Peanut will work if you use a shoe-mount flash that does not have pre-flash, but with the built-in flash, you need a 'digital' optical slave).
Note that reportedly SOME versions of the FS-1100 have a PC connector built in.
Last but not least, as others have stated, a radio-based system to mount on the hot shoe is probably better, but I'm a cheapskate.