I created a project on SourceForge for sudo! The first release under BSD License will be uploaded soon.
sudo does not request for a password of the administator account. It just elevates the execution of a given program or script. For example if you want to start a service as a normal user under Windows Vista or Windows 7 you would try the command net start [ServiceName].
This usually does not work. You don't have enough rights to start a service. Even if you are in the Administrator Group.
With the sudo command, you can elevate your script or program now. just type sudo net start [ServiceName] and a popup window will appear asking you if you want to allow the elevation.