Windows Vista UAC - quiet mode
If you are tired of the Message box asking you to allow Admin privileges, there is a small registery tweak to skip this Message Box without disable UAC (User Access Control).
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"ConsentPromptBehaviorAdmin"=dword:00000000
Warning: Microsoft do not recommend or support applying this tweak or disabling UAC.