AutoIt is a Windows window-manipulation language.
These scripts were developed for automating application installation on Windows XP, Service Pack 2 (roughly 2006)
Push buttons, interact with windows, move the mouse, etc all using straight-forward language. You can make GUIs too but they aren't as easy. I use AutoIt mainly for program installation (automatted, combined with a .cmd script = consistant installs).
download: http://www.autoitscript.com/autoit3/
info: http://en.wikipedia.org/wiki/AutoIt
A useful editor: http://www.autoitscript.com/autoit3/scite/