To be an effective network administrator, you don’t have to be a scientific genius. And you don’t have to memorize a bunch of obscure facts about hardware and software. Instead, you need to know two things:

Where to find the appropriate solutions to technology problems when they arise
How to use the right tools for [...]

Do your users use IM in your network? If I ask this questions, I believe above 95% network administrators will answer: Yes, of course.
MSN, Yahoo IM, Aol IM, Google Talk etc,with the rapid development of instant messaging tools,which are not just used for personal entertainment, but for workplace tools. However,according to a survey on the [...]