>>>Sorry for being so dense, but where can I find the "mailx extension"?
>>
>>http://www.terckland.com
>
>Great page! I did not get past Go and did not collect $200 because I don't have a serial no.

This is a bug. I found that last week. The owner is probably not aware of that. They replaced the main page accidently by this page. Just send him an email so he will fix the situation.