"As one who is dead to the world does not need to drink of the water of the Earth, a computer that is dead to the Internet does not need to drink of security updates of the Internet."
-Me
soybean is absolutely correct. If your computer does not need to connect to the Internet, you can use your computer without fear of not having a vital update.
Cheers, and happy computing. Windows ME, you say? Good luck. 8-)