I have never heard of a firm that allows remote trading with no deposit required (or "training" fee).
To the OP, DV Trading is still around but I don't know much about them, there's also Infinium Group down on Front Street as well as a subsidiary of Title, Talent Trading down on Spadina. There's one more in Richmond Hill I think, not sure on the deposit situation though...Globus trading.
ya maybe the "training fee" isnt offcially a deposit.. However, I guarantee that is what they use it for....fund the account in case the trader blows up the account.