Change default view in Calendar

Hi,

Using Outlook 2007 (from the total office suite), I've got the problem that
my Calendar view keeps "jumping back" to the one-day-view.

So, when I swithc to mail, and then click/switch back to Calendar, it always
starts with te one-day-view.
I've closed down Outlook when in 5 day week view (the default view I want
for my calendar), but it still keeps coming back to the one-day-view.

Who knows how to change this?

Oh, I've also run a "office repair". No luck.
Thx