no, the Billing IP should be "localhost", without the quotes. localhost is actually similar to 127.0.0.1 but in this case it will only work with localhost as its IP.
Set the following: [Misc]Port= <- set to a number other than 185. like 2300. then port forward 2300 as UDP on your router. [billing]IP=localhost <- set this to localhost (as you see it here). also make sure that your [billing]Port matches the Port in the subbill.ini and the [billing]password matches the SysopP!@#$%^&*word in subbill.ini (however that is referenced). plus do what Cancer+ said and make the [Misc]ServerIP= match the IP you obtain from whatsmyip.org.
Testtube is an admin of SSDownloads.com so you can try dropping him this message. I'm sure that EG not appearing on Continuum's initial zone list was a mistake, and should be fixed.