CS-Extreme.net has added a new HLTV Guide. It covers both using and setting up the Half-Life TV proxy and server. Here's a bit from the article:
Along with the release of Half-Life 1.1.0.8 comes Valves new technology referred to as the Multicast Spectating, also known as HLTV. The technology allows hundreds or thousands of people to watch a game of Counter-Strike (or any other Half-Life MOD), and study game strategies, watch their clanmates play or simply enjoy the action. The configuration involves a master proxy which is connected directly to the game and receives all the data. All other proxies, socalled relay proxies, are connected to the master proxy and transmits the game to those who're connected.Good read!
Since it's first appearance I've read countless e-mails, forum posts etc. from people who haven't figured out how to view/setup games, and since HLTV is a feature every gamer should be able to enjoy, we've written this in hope to help people using this excellent technology.