Short answer was given above: no, you can't.
If you're interested in knowing why, read the following:
There is no way to 'automate' UAC. User Account Control was developed in order for malicious software (viruses, spyware, adware, etc...) to avoid being run on a target machine.
It is similar to the permission dialog on *nix-based Systems (Mac OS X, and many, many Linux distros), that ask for your password whenever they need to execute some code that requires an elevation of privileges (for example, installing an application).
The problem with Windows is that in previous versions (Windows XP), it became extremely easy for unwanted software to execute code on a target machine and compromise the whole system. This was put in place so users know when someone/something wants access to more than they can usually do by default.
So if UAC is really in your way, they only way is to disable it (Control Panel -> User and Account Settings -> User Account Control, and drag the slider to the bottom on Windows 7).