sharing files on a Windows 7

To share the files on a Windows 7 computer you need to turn on the file and printer sharing option.
Follow the steps given below to do the same.

To turn on network discovery, file and printer sharing, and public folder sharing in Windows 7
1.     Open Advanced sharing settings by clicking the Start button, and then clicking Control Panel. In the search box, type network, click Network and Sharing Center, and then, in the left pane, click Change advanced sharing settings.
2.     Click the chevron to expand the Home or Work network profile.
3.     Select the options to turn on network discovery and file sharing.
4.     Under Public folder sharing, do one of the following:
o    To share your Public folders so that people on other computers on the network can open files in them but can't create or change files, click Turn on sharing so anyone with network access can open files.
o    To share your Public folders so that people on other computers on the network can open files in them and also create or change files, click Turn on sharing so anyone with network access can open, change, and create files.
Click Save changes. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.