Well heres the thing. I am sort of new to the photography thing, so bare with me. I want to take my Olympus E-500 and have a flash on the "Hot shoe" and have a slave set up somewhere. I would like to do this wirelessly, but the catch is I dont want to pay $500.00. Is this possible and what do I need? I would consider using the wired version if it will save me alot. Thanks!