BB and Outlook question

Hi -

When I receive an email for my work email account on my BB, it automatically opens the email in my desktop Outlook - if I read the email on the BB or not.

How can I stop the Synch from opening the messages in Outlook?

Thanks!

i have the exact opposite problem. if i read my work email on my blackberry, it doesn't download to outlook. how do i fix that?

BES or BIS?

I'm using BIS