How to Set the Default Printer in Windows Vista
You need to name a default printer if your PC has access to more than one printer. The default printer is the one that Windows uses, for example, when you click a Print toolbar button. To set a printer as the default printer, follow these steps:
Open the Printers window.
Your list of available printers shows up.
Select the printer you want as your default.
Most likely, you’ll choose the printer you plan to use most often.
Click the Set as Default button on the toolbar.
The tiny check mark on the printer’s icon confirms that you set the default printer.
You can change the default printer at any time by repeating these steps.