Edit: looks like you get your driver from window update, do a window update. Type "windows update" without qoutes into the start search box and select "windows update". On the lift hand side, click "check for updates".
Oh,you are connecting the printer using a parallel usb adapter? That could be the problem. Although I don't know what can be done about that. I assume there is no driver require for the adapter. But I am no expert of legacy hardware, sorry.