If I'm understanding correctly, you need to disconnect your printer then start installation, then follow on screen prompts (most new devices work this way these days - install software first then attach hardware). If you have already started installation, you may need to go to the control panel and remove what has already been installed before continuing
Yes i have. The 32-bit Version. But while installing it says conect the printer or specify the port manually. I use automatic but it dsnt find the printer.. And manual i dont know what to set cuz it is conected via USB.