facebook msn aim

How do I block / hide what I do on my computer to my employer?
Working from home and need to download applications to work with my work. I belive some of these applications, making them SOMER type of access to my computer, because when I'm on facebook, msn, aim or send me a message on the screen to close the session. I wondered if there was anything I could download my messages instnat skin. It's my team and I pay my monthly internet.
If the team the employer or the network, you can do what they want. If both are to you (you pay for computer and Internet), they should do something to your computer. You do not give sufficient details as to say he is the "right" here …
Who’s Going to Rehab w/ Me? (Stickam, BlogTalkRadio, Facebook, MSN, Myspace, AIM, Twitter, emails…)