Nucleus ReadyStart runs on Windows 7 and Cygwin is not needed.
Please see the Nucleus Kernel Guide for information on how tasks are started from the OS, and the start function required to be in each task. The scope is too large to try explaining it here.
For a step-by-step guide on using ReadyStart, please see chapter 2 of the Nucleus ReadyStart ARM guide.
There may be training available. Please consult with your account representative for details.