Vista - prompt for admin name and password

Hi,

I'm trying to set up a Vista Enterprise box, fully patched and on a
domain so that when I right click on an app and then click on Run as
administrator it prompts me for a user name and a password. I login
with a non-privileged domain account and need to elevate to an account
that has admin privileges on the domain and locally.

I know it is possible because that is how my current computer is
configured. I just can't find the tip sheet I found last time.

Thanks!