Run as administrator installs to the administrator user's profile running the install.
wrong, this will not install in the user's "profile running the install" but in the built-in Administrator account (which is hidden by default). this is not the same as a user account with administrative rights.
this account is best left alone. create another account with administrative rights and use the option "Run as a different user".
in Windows 7 the option
to execute a command as different user is hidden by default ("shift in Windows 7 use "shift + right click", however, will reveal this option).
