Newbie with an issue - Can't see the login page & it dies after server reboot

[djmega01]

I know that this may be somewhere and if I deeply look I'll find a solution to it.
I followed step by step this
http://www.isp-control.net/documentation...ion/centos
But after installing, I cannot see the login page at admin.mydomain.com
I got an "address not found" page when I enter it in any of my browsers.
My domain is pointing to my server's IP address and I'm using CentOS 5.3
If someone can point me somewhere where I can fix this, and also, I would like to ask if you have documentation in spanish and portuguese.
I speak both languages also and can help with the translation.

Thank you.