follow this. you are not going to get any easier than this
http://iptvtalk.net/showthread.php?42607-BuzzTV-XR4500-XRS4500-some-setup-instruction
and just incase you dont want to read the whole thing
c/p crazed 9.6
Launcher screen > Server Settings > Sever Line > Add Server.
Enter thru the onscreen Keyboard (KB) a favorite name to name your Portal. It can be any name you want, keep it short and sweet.
After the name has been entered, either press the Back button on your RCU and scroll down to the next slot and then press enter again to bring up the KB.
Or that blueish greenish colored key on the KB brings you to the next slot as well.
The Portal URL is next to be entered and you will notice that the BuzzTV4 app already has the http:// prefix entered for you, so follow that up with your server URL.
Next we would leave the User Credentials box un-checked and scroll down to Connect, but do not press on it yet.
First thing we need to do is visit the Server website and log onto your code and enter the MAC ID onto your code.
The MAC ID you want is shown as 'Server ID' and is seen in the top right hand corner of that same onscreen Server setup menu.
There will be two MAC Addresses/IDs shown there.
Top one is shown as the MAC Address and bottom one is shown as the Server ID
The one to add to the server is the Server ID
You will notice that both of those end with the same 6 digits , while the first 6 digits are different.
The Server ID starts with 00:1a:79 and is the correct one you want to attach to your code at the website.
Once that is attached, then select the Connect option on that onscreen menu.
Add multiple servers if wanted.