I don't have that game so I can't be sure how it works but sometimes it is possible to press the tab key to select a new field or button. If the game allows it that would probably be preferable to using the mouse.
The other thing is that if you are going to use VC.Pause for more than a second or two it is often a good idea to prefix the command name with ++ so that it runs the command in its own thread and does not freeze VC.