How to stop my network monitor from locking?

Greetings,

I am actually a satellite communications tech in the US Army shoved into a network administrators job by personnel cuts in Afghanistan. I am trying to get the additional monitor connected to my network management computer to stay on when the system locks so I can monitor SNMPC from across my office. Can anyone help me out here?

My management computers are running Windows Server 2003. Thank you in advance for any assistance you can give.