Office 2010 isn't opening any files

Hello,

I've downloaded office 2010 - and it's not opening any files form box unless I select 'open with' for each file. I want an automatic download to open as it does with all my other files on other laptops...

I've downloaded the file converter but it's still not resolved. My colleagues used Mac office documents, but I never had trouble working on their documents on my other laptop. What's going on?
Please help!

http://www.microsoft.com/download/en/confirmation.aspx?id=3