Auto Complete Usernames
If you access sites that require your username and password you can set Internet Explorer to auto fill in the information for you after you've entered the first few characters of each field.
1) In Internet Explorer, click on Tools, then 'Internet Options'.
2) Click the Content tab.
3) In the 'Personal Information' area, click 'Auto complete'.
4) Check the 'User names and passwords on forms' box.
5) Click OK to finish up.