Ive recently tried upgrading my phone to a w800i and may have done something wrong..After removing my sim and battery ,then replacing the bat. I then held "c" button and connected the usb from my PC...The connection wizard apeared but found nothing..I tried for hours to try and get the micrsoft server to appear (as i was told it should) but nothing.So I tried another USB port and the wizard apeared again....Ive used all my ports now all 5 of them and now none of them work or recognise my phone(nothing) ONLY other devices ....What have I done to my phone/driver? AND is there an Quick and Easy way to get my k750i working as a w800i/w810i???? IM HAPPY TO ANSWER ANYONES QUESTIONS if I can for Example:What is the name of the song in the Corsa advert with the Knitted dolls(The C'MONS) which goes"Cruzin' Cruzin' " by Sean Paul....I know the answer !:D