Users looking for help will be able to access Live Chat via a web applet. People giving support, though, need to install and run a client locally. While we recognize that not having to install a new app to give support is ideal, we feel the features the open source Spark client provides are more than worth it.
Your account will have to be approved before you can help users, but you'll be able to log in and be invited to user chats. See Helping with Live Chat for instructions.
If you have problems creating an account or configuring Spark, you can get assistance on IRC using #sumo on irc.mozilla.org
We highly recommend you turn on sounds, especially if you plan on accepting more than one chat session at once.
The rules are still being worked out, but are basically going to be an enforcement of common sense with patience for the users. See them here Forum rules and guidelines