hi friends, all of us know that we cannot set full screen wallpapers in symbian phones, iam using n73 ME, can we edit the theme MBM file and can we replace the theme with our own wallpaper,

and another thing,in which folder the received messages by bluetooth are stored in memory card,i have received a wmv file through bluetooth, i can view it in inbox but how can i transfer it to my PC, i have searched it by connecting the phone in mass storage mode but i can't see the file(even searched in private,resource,data folders also) but it is in inbox , i think it will store in MMC in some encoded format , can anyone know about it , please help me it is urgent