Remote Control Rover Help

[Dominator_Legen]

Hy,

[Intro]
My Name is John, From Egypt, Study Computer Scince, I need to build a rover robot for my graduate project, Please i need help to the following problems.

[1] First Problem

The rover use 4 wheels to move, Using 4 Servo, I Saw a clipe for omini3.mpeg that allow the rover to turn left and right, by directing the left(Front and Back) Wheels To Forword, And Right(Front and Back) Wheels To Back, By this method the rover turn around it self, My problem dose this method work in any surface (sand or grace or etc...)???,

(*) Please if you can give me a way to turn the rover left or right, if you have method better than this method, Thanks

[2] Second Problem

My project idea is a robot, the rover is used for military fields, So it have a camera, that return its stream to the persone control it.
Its remote control (Long Distance 1 or 2 mile) -> Please give me a tutorial for interfacing the trancever circute to the motherboard of the robot,

PLEASE HELP.
I need a complete tutorial that explain IN DEATILES the steps to build a remote control robot rover (from a long distance).

Please help me if you can.

Thanks In Advanced For Any Help.