i had the same problem you must do a hard reset it will wipe out all your data (phone nums etc...) but it will reset your phone to factory default. heres how:
1 there are two soft keys on the wing one is the button on top of the send call button the other is a button ontop of the end call button hold them both down at the same time.
2 there is a reset button on the left side of the wing (above the place the micro memory card goes) use your stylus or something to press the reset button for 1 or 2 sec then release the reset button while you are still pressing and holding the two soft keys
3 continue to hold the 2 soft keys the screen will turn black and a message will be displayed (giving you a warning that all your data is about to be erased do you want to cancel or accept the reset) you must choose accept and the phone wipe data back to factory settings and unlock all you have to do now is reprogram contacts and whatever other info you had in the phone
if you do this right you phone will be back to normal i promise e mail and let me know if you fixed it p.s. if you could help me find the wing unlock code if you know it and the procedure to unlock to another carrier please tell me