Hello. I am new to Mac. So far, I've been enjoying using my brand new MBP but I still have lot of things to learn about the way Mac operates. So please pardon me for asking what may be a silly question but how do I go about signing up with iChat with an email account other than mac.com? I don't even have AIM nor do I wish to create one just for the purpose of creating an iChat account. I have a Yahoo Messenger on my PC but YiM is so buggy, I seldom use it. From what I've seen so far, iChat requires annual fee. I do not like this. Are there any free chat programs for Mac out there? If so, which would you recommend?