Transfering iTunes library to new MBP?

I have a new MBP on the way,it will be here Tuesday.First Mac ever,I can't wait. How can I transfer my iTunes library from my windows pc to my new MBP? There is no way to transfer all my music right from my iPhone 4 is there? Looking for the easiest way possible.Thanks alot for the help. John

Welcome to Mac Forums..

This is such a common question that a search would've yielded a TON of answers..even a google search yields:

Lifehacker, tips and downloads for getting things done
Migrate Your iTunes Library from Windows to Mac (and keep your ratings, play counts and date added) | tunequest: music reviews and itunes too!
How to Transfer iTunes Library to a New Computer - How to Copy iTunes
Copy iTunes library from a PC to a Mac
Transfer Music from iPod to iTunes. Copy any iPod to PC or Mac. iPod rip.

So I would suggest that you first search the forums for your question and create a new thread if the posts that exist don't address your question..

Regards