Re: How to remove (or at least lift) carpet
The carpet should just pull away from the front area of the passenger foot well. Underneath you will find a piece of styrofoam and a metal frame that holds the transmission control unit and I believe the amp for the stereo. All of that comes up from the floor. Pull back the carpet and use the metal frame to prop up the carpet.
Like Caught said, you also need to fix the leak so this doesn't happen again.