A virus has locked me out!

I heard bad things about a "Hal" virus that locked you out and the electronic eye from 2001 space odyssey showed up on your screen. I was told not to open email with any mention in the subject line. This thing may have crept in through our cable in the middle of the night. Computer was fine last night, watched a movie. Turned off the monitor, went to bed. Turned on the monitor this morning and there was "Hal". The keyboard doesn"t work. The mouse doesn"t work. I can get into safe mode but still can't do much. It says administrator has locked functions. That's me and I haven't. My son has it too. He said he caught it last night. Could it have crawled through our network from his computer to mine? My husbands comp is fine but he is unplugged from the network.
Any suggestions?