Paradigm is right, purists will say the Ross-Tech way is the only way to go and that the cheaper cables are unreliable but tbh my £15 cable hasn't let me down yet.
Managed to enable windows on fob, disable windows on key in door, disable selective unlocking, read/clear codes and a whole load more. Albeit this is with the full version, which was supplied with my cable... which I think is somewhat less than kosha... eep.