Enable Microsoft-Windows-Terminal
Services-R
DP-WinStat
ionExtensi
ons
 when doing an unattended installation
See link for samples:
http://technet.microsoft.com/en-us/library/cc732280.aspxSuggestions for configured options in answer file for remote installations:
http://technet.microsoft.com/en-us/library/cc749227.aspx