I am starting a project and want to put in USB. I need a small foot print. I have no idea where to start because there is too much information, I am looking to have my USB appear as a regular COM port on the PC. I beleive this is called virtual com port. Its an MCF51JM project. I have a few questions ? Are there virtual com port code examples for code warrior 10 out there ? What is the difference between CMX stack and freescale stack. Should I start with one of those ? Whats the best reference material ?