On my PC there is a card reader connected. It shows up as 4 different drives when I look at "My Computer" and elsewhere. One of the slots in the reader is for sim cards. When a sim card is inserted a Windows sound is heard and the "Installing Device Driver" window shows up and then another window stating the installation was not successful. Any further action from within windows does not solve the problem. I tried an external card reader and the same negative results. this was tried with 3 different sim cards. Any solutions out there?