1.) I'm not sure what you are referring to...are you trying to repair Vista, repair a program, or install/run a program designed to repair problems?
2.) Vista will log you in automatically under two conditions:
a.) You only have one account that is enabled.
b.) There is no password on your user account.
a.) To disable an account instead of deleting it, go Start->Control Panel->System and Maintenance->Administrative Tools, launch Computer Management, expand Local users and Groups, select Users, right-click the username, select properties, and check Account is disabled.
b.) To remove the password, go Start->Control Panel->User Accounts and Family Safety->User Accounts and click Remove Your Password.
Hope this helps,
I wish to know how I can enter a repair program and also how i can program the bootup to automatically enter me as administrator on bootu without entering the password each time. TIA Howie