PowerMac G5
For some reason it will no longer connect to internet. My Macbook via Airport card does, and the old Dell does, so I know it is not the modem or router. Could I have inadvertently changed something? The only thing I did differently was plug in an external hard drive to back up (which didn't seem to work right). I switched the ethernet from one port to another on the G5, and it still didn't work.
Thanks for your help!