I recently had Road Runner installed and am using a Motorola Surfboard SB4100 cable modem. I have a wired PC and a wireless PC (both WinXP)connected to a Linksys WRT54G v6 router I am trying to connect a (wired) PowerMac G4 running OS X 10.3.9 (also need OS 9.2.2 to run EPSON Stylus RIP). The PCs work with no problems, but I cannot get the Mac to browse. I removed the router and PCs from the network and connected the ethernet cable from the modem directly to the Mac. I performed all the required power cycles and network setup (in OS X) as suggested by the Road Runner service tech, disabled firewall, etc., but still no connection to the internet. According the the service tech, the IP address shown under "using DHCP" from the built-in ethernet is invalid and they believe my ethernet adapter is malfunctioning. They have reset the modem and verified the connection to my computer. Network status shows built-in ethernet is active but "may not be able to connect to the internet". The network utility says the ethernet adapter is active, but I cannot ping any outside addresses (Host Down error messages). I removed the G4 and installed an older iMac with OS X (10.3.4) and it worked fine. How can I be absolutely sure it is my ethernet adapter or have I confirmed it by installing the iMac? Is a new ethernet adapter expensive? Do most Mac compatible USB ethernet adapters work with OS 9? I apologize if this information is in a previous thread, but I don't have time to search and I am a newbie to this forum. Thanks in advance.