wtf? How can I tell IE how to play mpegs
 

I foolishly downloaded Windows Media Player 9 a few weeks ago, before I found out it doesn't work.

When I click on a web .mpg, it crashes, even though if I save first it plays.

So I changed my folder options-> file types to use a diferent player, only IE still uses media Player 9.

How can I change the MIME types for IE to do what I want - it used to me right on the options years ago?