Please verify the security risk before you enable this feature !!
Everyone can gain acces to your computer after this !!
You should know that it is required to store your username and password
in the registry to enable this function.These sensible data will be stored
in plain text ! To do so anyway navigate to:

- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
\Windows NT\CurrentVersion\Winlogon\

Pick here in the right pane the entry:
DefaultUserName (Doubleclick it and enter your username)

Now select/create (right click in the right pane , new , REG_SZ [String Value]
and name it as mentioned below ) the entry :
DefaultPassword (Doubleclick this entry and type in your password)

Doubleclick/create (same as above just with the entry name below) in the
right pane the entry :
AutoAdmninLogon
Doubleclick it and set it's value to 1.The value 0 will disable it.

Note: - If no DefaultPassword is specified the AutoAdminLogon value will be
set to 0 and the feature is disabled.- As your password is stored in the registry
in plain text,verify the risk through network registry as well.
- After a restart you can logon automatically.