Unlocking a Samsung sph a660

[WordBringer]

hi dose any one here know or know were to get info or data cables to unlock a samsung sph a660 i just bought the phone with sprint and there high prices forced me to have to drop them the bill went from $45 a month to $68 a month which they dont tell u when u sign up that they can rise the price when ever they feel so ive found a new provider which is alot cheaper and no contracts but i need a phone to use as to there are relly high $$ to buy new so i was wanting to just use my good ole few month old a660 but i cant seem to find any thing about how to unlock the phone