1 st step
Start your own blog.
It's totaly free....All the Tutorials that you need is here.
http://www.99chats.com/ lets you create your own chat room in less than 5 minutes. Just sign up with any email account and start creating your chat rooms. You can create as many chat rooms as you want and add them to your blog, website or social profile (Myspace, orkut, hi5, Friendster, WordPress and Blogger).
You can completely customize the look and Feel of your chat room. Invite your friends and their is no registration involved to enter in your chat room. The service can also improve by giving every chat room a unique URL. This way it would be easier for users to invite friends.
http://www.tinychat.com/ is the best chat application that requires only your browser to do the job. No registration, no signups. When you create the chat room, Tinychat provides a URL. Share the URL with anyone and start your conversation right away. You can also sign in with your twitter account and start tweeting in Tinychat
You can save your chat Logs as a txt file in your computer, email the chat log to any email address, save to your twitter account or as a URL that you can view later. You can add your chat room to any webpage or your blog. The only downside is that you cannot configure the look and feel, but compared to the advantages I think it does quite a good job.
http://wwwl.meebo.com/rooms/ is similar in functioning but with an attractive interface and advanced features. You can create a chat room and embed it in your blog or website. Send the URL of the chat room to your friends and they can join even if they are non-Meebo users. What makes it unique is when you add a Flickr photo, Youtube video or any other web media, it is embedded in the roomand all the users can view it. So it is ideal for conferences.
You cannot save your chat logs and any video embedded in a Meebo chat will contain advertisements
http://www.chatmaker.net/ lets you create a temporary chat room for your use. Just give a name to your chat room and share the link. No registration or sign ups and its completely free.
Users can join your chat room with their mobile phones which is an added advantage. Unlike the other services listed above, you can neither add this in your blog nor in any social profile. But it is a very secured service as you can chat with anyone as an anonymous user.