check out this post of mine: http://www.autohotke...-12#entry505939
if you modify "win_title=Rechner ahk_class SciCalc" to suit your needs, you could minimize the program with one click on the tray icon.
modifying the script even more, you should be able to minimize the program automaticaly... hint: use the forc... ehm... SetTimer. have a look at the AHK manual.
@alexball + Tweakyworld:
i don't own a copy of Win8 - so no testing possible on my side... sorry.
if you could narrow your problems a bit down, maybe i could help you nevertheless.