OpSys is Windows XP Profession Service Pack 3 (build 2600) Processor 3.2 G Interl Pentium 4 2 G RAM Standard 101/102 Key or Micorsoft Natural PS/2 Keyboard Machine is 3 years old Here is what happened. I tried using a wireless keyboard and mouse by Logitech on this machine (LX710 wireless keyboard) I found that the function keys did not work properly in Excel (f2=edit, etc) and in Peachtree (f2=lookup, f10=exit current screen, etc), so I uninstalled the keyboard software and connected my old keyboard and mouse (wired) back to my machine. Now the function keys do not work on this keyboard. I have no device conflicts, I have tried to uninstall the driver for the keyboard, nothing seems to help. Does anyone have any ideas I could try. Thanks