In windows 7,homeGroup makes it easy to share pictures, music, documents, videos, and printers with other people on your home network. When you set up a computer with this version of Windows, a homegroup is created automatically.
Create a homegroup
1.Go to Control Panel,then click Homegroup .In the Homegroup window ,click Create Home group then follow the instructions
If a homegroup already exists on your network, Windows will ask if you would like to join it instead of creating a new one.
If your computer belongs to a domain, you can join a homegroup but you can’t create one. You can access files and resources on other homegroup computers, but you can’t share your own files and resources with the homegroup.
Add computers to Homegroup
Computers must be running Windows 7 to participate in a homegroup. HomeGroup is available in all editions of Windows 7. In Windows 7 Starter and Windows 7 Home Basic, you can join a homegroup, but you can’t create one.