ok, I pull a date from an as400 that is stored in century date format. so, what I do is, create another field in my DB and use a formula to place the date together in a format I want.
e.g.
(substring([Yourfield],4,2) + '/' + substring([Yourfield],6,2) + '/' + substring([Yourfield],2,2))
the numbers represent what char's you want to include in the string..
I do it this way so I don't have to mess with it on the front end.