How to format gt b 7320 cell

Hello,
dis is nazar masu...
(1) I am facing a continually problem. Relented to Gt b 7320. pls tell me how to format complete Samsung Gt B 7320 handset. secondly my window media are totally corrupted file so pls pls help my cell r8t now useless .
(2) my omni pro getting started disc does not work. i have installed window 7 in my pc..
(3) window file corrupted problem so ringtone and any sound does not access. only vibrate mode is started...pls sending me a full detail and hep me. thx