Any printer made in the last five years or so has a USB port on it. And really, they are so cheap there is no reason not to just get a new one. Return that adapter and you can pick up a decent inkjet for about the same price.

About Norton: first, don't install it. It's the single biggest cause of problems ever on a PC. They should be sued out of existence. If you're determined, though, right-click the setup and choose "Run as Administrator". It will install without the errors. This is explained if you take the little tour when Vista starts the first time.

There is nothing wrong with Vista - you just have to have a printer that's designed for it!