you don't need a tutorial,
please try the following
1) connect via telnet to your box. So - Command Prompt and type in:
Code:
telnet ip.to.your.box
(replace ip.to.your.box with the correct IP of your box - you can find this information in the network settings of your box)
2) then you will be asked for username and password, so username: root, password HDMU
3) now you are in the world of Linux of your box, then type in:
Code:
ping www.hdmedia-universe.com
At the end please copy the whole output of your session and paste it here
Good Luck!