Try this...
http://rick_oleson.tripod.com/index-30.html
that silver ring around the shutter release is actually a screw. Griping it with masking tape or even adhesive tape will help you screw it out by hand (you do have a vise like grip, right?). It should turn counter clockwise to screw off.
I have used one of those rubber jar openers that banks used to give away. Kind of a textured rubber square about 1mm in thickness. Or, if you have those blue gloves for dishwashing or cleaning, those can work too.
Greyhoundman's suggestion will work as well. Just treat it tenderly and be sure to wrap the jaws as he described.