"Easiest and least expensive:
1.Purchase an Iden Starter kit off of ebay. ($5)
2.Activate the kit online via boost's website and begin your port in the process (explained on the website during the setup)
3.Wait for the port to finish. (4-72 Hours)
4.Call boost and ask to migrate to CDMA.
5.If they ask what phone your using, play dumb and say something like "uh, its the one with the full keyboard" and let them assume what they will. (tell them it's a used phone and ask for programming instructions because I have poor receptin where I am now)
If they start pooh-poohing, tell 'em you understand that although the phone is allowed it's not supported."