Stop Spam Email

How do I stop junk emails / spam from going to my AT&T Blackberry 8700C email?
I get my emails to my Microsoft Outlook email account AND and to my Blackberry…SAME email account.

I have the spam settings set on Outlook which blocks almost all the spam / junk emails from going to my outlook..

BUT

These spam emails still get sent on to my Blackberry…How can I get both my outlook AND blackberry to catch the same spam / junk emails?

Microsofy Outlook is doing a great job and now i need my blackberry (AT&T) to do the same.

Any suggestions?

I use Norton and Outlook on my desktop and it is set up that spam immediately goes to the bulk file. I don’t want the spam coming to my Treo. How do I make it stop?
Thanks!