NW AS ABAP 7.1 Kernel Windows, X86_64 ???

i am trying to install NW AS ABAP 7.1 Application Server?

The KERNEL CD Contains the following folders ?

Request you to explain what is the difference betwen them?

The Folders it contains is

K_710_NI_WINDOWS_X86_64

K_710_NV_WINDOWS_X86_64

K_710_UI_WINDOWS_X86_64

K_710_UV_WINDOWS_X86_64

Rgds