enigma1 - 7:45 pm on Dec 15, 2011 (gmt 0)
@netmeg did you even read the OP? Probably not.
GoDaddy's shared Windows hosting server
Shared server and custom error page. Same server multiple accounts. If you want to send a specific header out like 404 do it for your site and in your code with a custom page. Someone else wants to handle it differently.
Many shared servers work like this, seems first time you heard about it not everyone wants to do it that way. If you need more control rent a dedicated or virtual box.