1/ Log in as administrator !
2/ Open "Run" item from "Start" menu.
3/ type
\\w2ksrv1\install\w2k_patch\engl\Q320206_W2K_SP4_X86_EN.exe
4/ If you are local administrator (<=> NO DOMAIN USER) probably your domain username & password is required.
Type it. Note that this is not required if your identity is known.
5/ Click Yes if asked whether you would like to install and
run Q320206_W2K_SP4_X86_EN.exe.
6/ Click Yes to begin the installation process.
7/ Restart your computer to complete the installation.
How to install German version ?
The same way but use the path
\\w2ksrv1\install\w2k_patch\deutsch\Q320206_W2K_SP4_X86_DE.exe
in step 3/ instead of the above mentioned one.