pretty much...
Kix can do it... sometime, but you'll probably get a high failure rate. Especially if you have users that like clicking around
If you do a search for silent or switches, you will find lots of hits... I deploy everything silent and if it doesn't have a silent switch I use WinInstall LE to make MSI files that are silent.
Avoid Sendkeys or AutoIt sendkeys like the plague... that is way on the bottom of the list of options
