No I don't even have a cord or any of that but I wanted to get a flash unit for it. I've shot Canon EOS E-TTL this whole time so this is all new stuff for me. I just stick it on the hotshoe change my settings and go.
Get a PC cable and hotshoe to PC adapter and use your 550/580EX in manual mode.
get a cheap Vivitar 283 and a PC to vivitar cable.