Before you get carried away with esoteric stuff check the simple things. Did your sister leave a cd or dvd in the drive?

Is this a domain controller? Have you recently upgraded your LAN? Here is a link you might want to read.
http://www.computing.net/answers/windows-2003/sending-broadcast-messages-from-dc/4738.html

Before you begin getting all sorts of different recommendations you might want to describe just what type of hardware and operating system you are having problems with. Is it a desktop with an intel...

I am in constant communication with my brother Jesus so I asked him about your statement. He told me to love you as he gave in the second commandment (after answering which commandment is the...