Stupid Mac Ethernet question

All: I just recently upgraded the network cabling in my house to 5e as part of some new construction, and I also upgraded the networking components. Now, all of my normal machines run at 100 full duplex. Anyway. The strangest thing happened to my Mac IIci - the Ethernet connection no longer works. I don't even get a link light on the new switch (a Cisco/Linksys switch). However, when I plug the Mac into a plain old 10BT hub and then uplink it to the switch, I at least get a link light. Nothing else works, though. The router doesn't show the Mac obtaining an IP address, and the ci doesn't see the AppleTalk zone that's on my NT Server box. In the previous configuration, everything went through a 24-port hub. Does this problem resonate with anyone? Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/> http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/