Disable UAC on Vista for a session

"It appears that UAC in Vista is pretty engrained and to completely disable it you require a reboot.

there are guides online with single command line calls to disable it. But you will need to reboot, so your session is controlled by you, once your build is done you can re-enable it and reboot again.

Here is the guide on How-To-Geek.

Disable Command:

C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f

Enable Command:

C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 1 /f"