Hi,
I figured out what happened. I simply went to the HP site and did a search for "Laserjet 4100 firmware". What I find is actually Laserjet 4100mfp printer firmware, not the old LaserJet 4100N.
Our users that do go through our print server all have the same driver. Some of the systems print to a local TCP/IP port though, and I'm not entirely positive that those all have the same driver. We are going to update our print server in the near future to a 64 bit OS and I will have to make sure both 32 and 64 bit drivers are avaiable from the server. (current print server is a 2008 32-bit OS and only serves out 32 bit drivers so new 64 bit Windows won't use the print server)
But that's a different topic.
Thanks all for helping clear me up on our 4100. I was confused but now I understand!