I just wanted to let everyone know that I tried the portable versions of Iron and they didn't work. I also tried version 30 and I couldn't open it. So I think Version 21.0.1200.0 (152131) is the latest version that will work with my OS which is mac os 10.6.8 Snow Leopard. Again thanks for everyone's help.
"Blessed are they who can laugh at themselves for they shall never cease to be amused"