I am not a Dell Employee
Dell forum member since 2002
Home Built PC with Gigabyte GA-Z77X-UD5H motherboard, i7 3770 CPU, Windows 7 64 bit Home/Win 8.1. SSD drive. Sonar X3c 64 bit Recordng Software.
Member of Nashville based R.O.P.E.
"The Flash Memory Card Reader adheres to the USB Mass Storage Class specifications. Windows 2000 and Windows XP are aware of this class of devices and work with them automatically."
So there are no installable drivers, they are installed automatically by XP and Vista, like any other USB mass storage device.
What you can do is open the case and unplug the device, boot into windows to clear the drivers, shut down and plug it back in, then boot up and windows will install the device again.
If yours is this model here is what is supported
Type of Media Supported: