Make someone an administrator in Windows 7.

1. right-click on "My Computer" or the comparable icon and pick "Manage"
2. at the Computer Management pane that appears navigate to: Computer Management (Local) > System Tools > Local Users and Groups > Groups
3. right-click on the "Administrators" group and select "Add to Group..." from the menu which appears
4. add individuals here at the "Administrators Properties" window which pops up