run as aministrator

I have downloaded Office 2010 Beta successfully and am running on all profile
accounts. I am trying to open a calendar from another computer. I can only
open it when I am logged on as the administrator. It will not let me open
the file from the generic profile. I have right clicked on the icon looking
for the "run as" command and it is not there. There must be a Windows
setting that needs to be changed. I tried to set the permission in the
Windows XP "Secondary Logon Service" and the setup type is already set to
"Automatic".

I want to be able to run as administrator from my generic profile in order
to open the file in the generic account. Please help!