I have two PC's: an older Pentium II 350 and a new Athlon 1.7 with Win XP When I bought the new one last Xmas, the old one was running Windows 2000. I set up ICS with the new PC as the host. I bought a crossover cable and it worked fine until one day the old computer simply no longer recognized the connection. Nothing new had been installed or changed. Windows 2000 had always acted a bit squirrely on the old one, so I reformatted the hard drive, did a fresh install of Windows XP so both machines would be running the same OS, and installed a new network card to boot. I have run the XP networking wizard on both. Each computer will recognize the other one under "My Network Places" but will not access them. The (two-way) cable modem works perfectly on the new PC but and the old one seems to recogize the connection but will not access the internet at all. I'm kind of at a loss now. I feel like I've checked everything and looked at every online guide to try to figure it out. Is it possible faulty hardware or components(like the motherboard) could be causing this? If anyone has any, any possible insight into what may be causing the problem, I would grateful.