How do I unlock my sprint mogul to use with boostmobile service?

Please help. Can anyone give me step by step directions to unlock my sprint mogul phone so I can use it with my boostmobile service. The phones they have are not the best and I really need my keyboard. Can anyone help pleeeeeeease!!!|||You mean an HTC mogul? It depends on your carrier, I do not know which technology boostmobile uses. Sprint uses CDMA if your carrier is also CDMA it can be done. Sprint is so badi ts scary. It sucks, I would not even get their unlocked phones.|||can not be done at all. boost is a prepaid IDEN service. u would have to buy a boost mobile phone.