Deathwalker, unfortunatley you need to apply rudder on take off. But, there is another way! When on the runway, hit shift x or x, this engages the autopilot. Then start engine, apply throttle smoothly, do not move any controls, then when at end of runway, pull back gently to lift off. Once in the air, using autopilot occasionally will help get your trim set so you don't have to worry about your rudders so much, or you can use the j and l keys to adjust your rudder to center.
These flight models require the use of rudder, there is no easy mode yet or any other way to 'dumb down' the FM's. Since you mentioned you are disabled and have trouble reaching the rudder keys, I would suggest that you get a joystick with the rudder built into the stick(twist the stick for rudder) if you can afford one. Microsoft makes one and I think a few others do also! Using rudder will allow you to use every bit of performance available from the fighter of your choice, bombers you probably can get by flying just fine with out them. I would also suggest getting a joystick with as many buttons as possible if/when you can. This game can potentially use a lot of keyboard commands depending on your mission, and mapping as many of them to your joystick as possible will go a long way to helping you out
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PS Email me if you like, I can meet you online or Head 2 Head(if you and H2H yet, not sure)and help you get off the ground!
ts