from rails 1.1.6 to rails 2.0.1

Hello Friends,
Actually working on a very big project the problem is that currently
we are using rails 1.1.6 but now planning to shift on rails 2.0.1,
but it seems that there is no limit for error. one after another I am
getting error. could you please help me out with the easiest way to
shift from rails 1.1.6 to rails 2.0.1

Move to rails 1.2 first. You will get deprecation warnings about
things that will be removed in 2.x.