The _x_x_x number in the package file names identifies the version of the package (for example, InstallPack_1_1_4.zip).
Extract the following sub-package contained in Windows.zip:
This is the program to install all server-specific device drivers and supplemental software after the initial installation of Windows.
Extract the following sub-package contained in Windows.zip to the appropriate Windows image (WIM) folder on the WDS server as described in Incorporating Drivers Into the WIM Image:
Server-specific driver archive for Windows Server, English.
Tools folder for Windows Server 2008 R2 or for Windows Server 2012 (for experts only, supplemental software archive).