> 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 + right click", however, will reveal this option).*

![alt text][1]


  [1]: http://4.bp.blogspot.com/_QshF9qEcBb0/SWZLDwN8dII/AAAAAAAAACU/JJr_4DyUFB0/s400/Windows+7+RunAs.jpg