Yes, you need 100 hours PIC cross country.
CSU and Retract endo's, and your flight test needs to be done in an aircraft fitted with atleast a CSU that can do 130kts or better.
bentleg is correct, there is much more to getting a CPL than just building your hours, you need passes in the 7 CPL theory subjects, fly more accurately, fly more econimically and smoothly.
There is also a requirement for 10 hours IF time.
Most schools will give you a route to fly on the day, and give you 1 hour to do EVERYTHING, from plan, to fuel the aircraft.
You will be taught how do fly professionally, whereas a PPL really just teaches you how to fly.
Finding small homesteads, or a tiny disused mine in the middle of nowhere is a lot different to finding a town with 10,000+ inhabitants, so being 2nm off track and not having your ground speed calculations down pat, and trusting your time calculations, then your going to have a hard time with the navs.
Another thing that makes the CPL course interesting is when the instructor (acting as a customer) changes his/her mind mid-flight about destination, which could have all sorts of operational implications.
Knowing your air law is also a must, as an instructor will often quiz you on such items as carriage of cargo, infants, disabled/handicapped persons, flight and duty times etc.
Fun and games!
