How do I set Iron as my default browser in Fedora 17?

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On my newly installed Fedora 17 Desktop Edition 64-bit (Gnome), I downloaded SRWare Iron via their .rpm from here. After installing it, I ran it and it asked me if I wanted to make Iron the default browser. I clicked yes. This didn't actually do anything, however. When I go to the Default Applications tab on the Details application, it still says Chromium Web Browser (which I had previously set it as). Iron also does not show up in the drop down box.

As a quick test, I opened Terminator and echoed a URL, which I then CTRL clicked. It opened the website in Chromium, not Iron.

Is there a way to set Iron as a "browser" according to my system, so I can select it in the drop down box, or a command I can run to set it as default?