I have xp pro installed .I had a problem with my mouse and while trying to fix it don't know what I have added or which file I have added but now when ever I start my computer or hit scan for hardware change in device manager,an add hardware window appears with found new hardware 'printer'.And then it can't be installed.I don't even have a printer attached to my computer.I have to cancel the add and even when I check don't prompt again about this hardware ,still it pops up next time I start the window.I don't know which file to delete to stop this annyoing add on hardware pop up window.Please help Regards