The situation is somewhat similar to Pete Rose: the big news is when the "line of virginity" is crossed -- that came last year, with the revelation a ref was involved in gambling (prior to that, the NBA categorically denied such a thing could possibly happen). Pretty much nothing from now on, up to and including the revelation that Donaghy fixed games, will really be that big a deal.
Now if it turns out some PLAYERS were in on it, look out. Don't think Stern isn't following stories like Latrell Sprewell quite carefully (if there wasn't ever a better candidate [than maybe Chris Webber] for a player throwing/fixing games, wouldn't it be Sprewell??).