Hi all I have found a fix to the gear and RAT bug on the official captainsim forum. Basically start FSX at your selected airport gate, at selected time and season and weather, choose a single engined aircraft. Once FSX has loaded select your chosen CS777, make sure all hydraulic switches are on including the hidden switches behind the captains seat :P, and hopefully if all works well the gear should retract and the RAT should also be retracted :)
Regards