This post describes how to open a command prompt with full administrator permissions in the following Windows Operating Sytems:
Windows 7, Windows Essential Business Server, Windows SBS 2003, Windows SBS 2008, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008, Windows Server 2008 R2, Windows Vista
To open a command prompt as an administrator,
1. Click Start, click All Programs, and then click Accessories.
2. Right-click Command prompt, and then click Run as administrator.
If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.