Camera Raw editing not enabled

I had to do a system restore only to find on return that

I get a message saying  "Camera Raw editing is not enabled. Camera Raw
editing requires that a qualiftyjing product has been launched at least once to enable this

feature"

I can open and work on my ORF's via the mini bridge but not the big one, very frustrating. Can anyone help please without me having to reinstall the whole of CS5?

Thank you in advance,

RonB