Easy. Unscrew the large screw above the right grip. When it is part way out, tap it with the screwdriver handle. This will cause the sideplate on the left to come out slightly. Now, remove the screw the rest of the way, and lift off the sideplate.
You will see the screw holding the left grip on the inside of the sideplate. You will have to remove the mainspring to get at the right grip screw.
Jim
[This message has been edited by Jim Keenan (edited March 25, 2000).]