If you get that tower before the guys come to set-it-up .... you get a template w/ it.
Also, you get the rubber gasket which has the 4 holes in it .... just line it up w/ the tower then pull the tower and drill w/ the gasket taped in place.
Thats how I did it on my chest freezer.
edit:
I would assume this
template would give you the same results