Hello! If Windows don't detect the adaptor automatically, then you can try installing the XP driver in compatibility mode. If that also fails, you can try manually installing the driver from Control Panel, Device Manager. But this shouldn't be too hard. Same trick applies in other old devices as well, assuming you are running 32-bit Windows 7. For Windows 7 64-bit you need 64-bit drivers which most likely the adapter doesn't have. As a last resort, you can add a new parallel port to your system via legacy PCI or PCI-E card.