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You would like to set up a Windows Vista computer in your home office to host file and printer sharing.
You need to do this while maintaining your security.
Go to the Network and Sharing Center and make sure file sharing and printer sharing is turned on. Configure a share name for the Folder on the Sharing tab in the Folder's Properties Dialog box. Configure Permissions in the Security tab of the Properties Dialog box. Permissions are required to make the folder available over the network and identify who has access and what their rights are. See the Microsoft link below to find out other ways to share files.
File Sharing Essentials