if you make sufficient contrast for the enabled/disabled buttons it will be
ok. Users are not that dump, and plus the disabled actions are used allover
in the modern OSes.
I vote +1 for all buttons visible, but disabled if not
active.
-0, I just hope I won't have to say this:
"No, you can't finish at this step.. the finish button is there just to
assure you that this wizard will end at some point. This way you'll know
where to click when that moment comes."
Marius