MS Office...installs a load upon any operating system.
First of all, Outlook will hijack your email function.
Then, there are update mechanisms.
Finally, there are multiple programs requiring heavy resources when they are running.
I don't know where you are getting your startup item data...but I suggest that you download/install Autoruns and take a look at the Logon tab only
fi you want to see what's running at boot that you should be concerned about.
AutoRuns for Windows - http://technet.microsoft.com/en-us/sysinte...s/bb963902.aspx