Cant Connect Via Usb Using My Nokia 770?
 

I have been able to use the usb fine until today, plugged in my official nokia usb to the 770 and my windows xp sp2 pc, then it came up under my computer " removable disk e" i double clicked it , then it says please insert a disk into removable disk e.

Then i get a sign on the nokia 770 saying " unable to connect to pc , memory card is already in use" have tried several times, tried restarting the 770 then trying also tried taking the memoery card then trying agina still no look what can i do?