I need to find the printer driver on my XP machine for my HP 2200DT printer so that I can copy the driver to my Windows 7 machine because the universal driver on the Windows 7 machine is inadequate (it won't let me print more than 1 copy at a time, and it won't allow me to select which tray to use; I have 3 trays). I am able to connect my XP hard drive to my 7 hard drive to get access to the contents, but I don't know where the printer driver is stored or what the file extension is.