I have been working with Win 7 for a year. On my network is another machine running Win XP with a HP Laserjet 2100M attached and I have been sharing the printer successfully until just recently. I renamed the Win XP machine on my network. I had to revise my credentials on Win 7 to properly re-connect to the Win XP machine and can now share files successfully but cannot connect to the printer. My old printer connection fails because it had the old machine name. I deleted the old printer connection and cannot create a new one.