Frustration. i'm very frustratedwith my sony ericsson cell model w580i....my little brother was

Question

i'm very frustratedwith my sony ericsson cell model w580i....my little brother was messing with my phone and lockedmeout of it...it says something about a puk code....do i have to directly to my service provider or is there sumway u can help me out in resetting the code?? its jus reeally frustrating!!! i would reallty appreciate your help thanx!