I installed a new printer (HP deskjet 6500 series) on one of the networked computers in our office yesterday and set it up as a shared printer. Ever since then, said computer cannot connect to the network ("network cable unplugged" error). Prior to installing the new printer, everything was working fine. I have tried rebooting the computer, uninstalling & unplugging the printer & restarting, unplugging the network cable and restarting & then plugging back in, and rebooting our entire network. Nothing so far has worked. I'm thinking about using system restore to revert the computer to the way it was prior to installing the printer. But, I've never used system restore before, so I'm a little wary. Anyone have any tips regarding that or other reasons for this problem? Thanks!