Knowlys, I've been trying to find something I remember, sort of, about the issue of Desktop Manager not seeing Outlook, not seeing it when it should, of course. All I can think of is doing a clean uninstall.
http://www.blackberryforums.com/rim-...-software.html But I'm not confident that this is the only solution.
The other issue you mentioned is this: Desktop Manager only sync's the default calendar on the device with Outlook. If you only have one email addres, then that is your default and you don't have to worry about it. Maybe that is your case, and there is not other option, and that's why you can't change it. But if you do have multiple email addressess, you need to make sure the default CICAL and the default CMIME are not facebook or desktop or something, and make sure the two are the same address.
But remember, the default CICAL and default CMIME is another issue. You need to setup the sync on the computer to even get that issue.