With user accounts, several people can easily share a single computer. Each person can have a separate user account with unique settings and preferences, such as a desktop background or screen saver. User accounts control which files and programs users can access and what types of changes users can make to the computer. Typically, you'll want to create standard accounts for most computer users.
Click the Start button, click Control Panel, click User Accounts and Family Safety, and then click User Accounts.
Click Manage another account. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Click Create a new account.
Type the name you want to give the user account, click an account type, and then click Create Account.