How To Automatically Logon To Windows 7

http://pcsupport.about.com/od/windows7/ht/auto-logon-windows-7.htm

1. Click on Start and then enter the following command in the search box:
   

   netplwiz

   Press the ENTER key.
   This command will load the Advanced User Accounts Control Panel applet.
   
2. In the Users tab, uncheck the box next to Users must enter a user name and password to use this computer.
   
3. Click on the Apply button at the bottom of the User Accounts window.
   
4. When the Automatically Log On dialog box appears, enter the user name you wish to automatically login to Windows 7 with. Then enter your account password in the two fields where it's asked.
   Click the OK button.