Vista Tutorial - Administrator Permissions

It seems like when I envoke Administrator credentials from within a normal
user account, I don't seem to gain all the permissions granted to the
administrator.

I can install programs with the Administrator credentials but I cannot
delete the icons that are placed on my desktop or delete any files created
while in the admininstrator account.

Mind you this is all while in my user account.

How do I check to make sure I am getting the full permissions of the
administrator account?