I will certainly try these ideas. However, I seem to remember that my Network Connections screen used to have both a 1394 and Local Area Connection icon, and now it's just a 1394 icon. Would this be a common configuration?
The only reason I bring this up is because the only thing that appears in Device Manager is the 1394 connection, which is functioning correctly, and I can't "remove" the LAN connection from device manager (because it's not there anymore). I'll post back here with what I find out. Thanks!