Need to install a .cab driver. How?
.cab doesn't actually compress, btw.
but, anyways, if you are updating drivers for device x:
My computer > properties > hardware [tab] > device manager [button] > find
device x > double-click device x > driver [tab] > update driver... point it
to wherever those 4 files are
if you are installing a new device:
control panel > add hardware > follow the wizard until you can select from a
list > have disk [button] > point it to the folder with 4 files
make sure there is an .inf file, otherwise this won't work...