Registering XPCOM in firefox. Unknown CID

I'm having difficulties registering an example XPCOM component into firefox from this example here: http://www.iosart.com/firefox/xpcom/ I'm trying this on Firefox 3.6. After successfully building and transferring the XPT and library into the components folder in firefox, and following what instructions are ap开发者_Go百科plicable, I'm unable to get the components successfully registered.

See the first bullet point here. This method of adding components to Firefox no longer works in Firefox 3.6.