I was hoping someone could give me a simple answer to this.....when I am lined up on the runway and I start to excellerate, the plane starts to go left or right, how do I make it so it stays straight????
If you are using a joystick or yoke (and I assume you are) just make gentle moves left or right to adjust the planes direction.
If you are flying with Jeppsen Real Weather activated you might be getting a cross wind - in that case you have keep pressure on the stick (left or right) to sompensate for the wind.
Hope this helps
You might also want to try calibrating your joystick in the settings section (if you have'nt already)!