Laughing Man - 2007-05-11

When I click on an email link it doesn't open up a new message in Thunderbird. Instead it opens it up in Opera (I do not have the mail component installed). I've set it to Thunderbird as a default in Vista and clicking on mailto links in my browsers correctly opens it up in Thunderbird.

I haven't found the option or .xml file to change yet, so could someone tell me where it is?