Just noticed that my key doesn't open my doors?? It works the ignition and the fuel door, but none of the front doors. HELP, can't lock my Rover.....

 

I suspect the connecting rod to your door lock has come off.
You'll have to pull your door panel to find out.
It's odd that everything else works and not the door locks; did somebody try to break in?
Does it still work in the rear door?

 

No, neither of the front doors will unlock with the key, and the rear door won't unlock with the key either. The locks work, but the key won't unlock them.