Help please S90/CS4 Problem

Hi All I am seeking some help if you don't mind.

Acquired the S90 a few weeks ago, shot some photos of my son's sixth birthday party last weekend in raw and cannot open them in CS4 which is also recently acquired so I have two things to learn!

What am I doing wrong?

Any help you could give would be appreciated.

Thanks

Update CS4 to 11.0.1 if you haven't already done so.
Also, update Camera Raw.
I'll try to find a link.

Edit: http://www.adobe.com/d​ownloads/updates/
Then in the dropdown, choose "Creative Suite" for either Windows or Mac.

Merlin_AZ thanks very much for your help, I appreciate it.