Run Microsoft update, using the custom option and look under the hardware tab. It will be listed there. Worked for my 931NW.
I would advise against installing the driver samsung provides....
All it does is add context menu entries and installs useless applications. No performance gain what so ever.
PS: If you still wanto install samsung drivers:
http://www.samsung.com/in/support/do...ia_cd=05021800