Automatically switch default printers between home, work, or school

Windows 7 offers the handy ability to automatically switch your laptop's default printer when it detects that you've moved from one network to another—from home to work, for example.

This feature, called location-aware printing, is only available in premium editions ofWindows 7. It's also only found on laptops and other portable devices that use a battery.

To use it, first set a printer as your default. That printer then becomes the default for the network you're connected to. Then, set Windows to change your default printer depending on where you are.

http://windows.microsoft.com/en-US/windows7/Automatically-switch-default-printers-between-home-work-or-school