I posted an ad on Craigslist and checked the anonymize box for my email return address. When I check the ad and try to send a response to myself, I get the following dialog box: Firefox doesn't know how to open this address because the protocol (mailto) isn't associated with any program." How do I fix this? I have System 9.2 and OS X installed on an iMac G4 but am only using OS X Version 10.3.9 and Firefox 2.0.0.20. My email address is <nowiki>********@***.***</nowiki> (email removed - c). This is where I want the responses to go. I'm receiving all my other mail at that address without any problem. I cleared the History, cache and cookies as suggested butt it didn't help..