Hello, I want to install a HP LaserJet 1320 printer (USB) onto a Windows XP machine (SP2) I use the command prompt: rundll32 printui.dll,PrintUIEntry /if /b "HP LaserJet 1320" /f %windir%\HPDriver\hpc1320c.inf /r "USB" /m "hp LaserJet 1320 PCL 6" I also tried rundll32 printui.dll,PrintUIEntry /if /b "HP LaserJet 1320" /f %windir%\HPDriver\hpc1320c.inf /r "DOT4_001" /m "hp LaserJet 1320 PCL 6" When I change USB or DOT4_001 to lpt1:, then it works fine! Can anybody help me? thanks Tuurken