run as administrator

I upgraded to Vista about a month ago, installed Office 2007 and everything worked pretty well until yesterday. I turned on the system and as it booted there was a message about needing to checkdisk. Then for the next 5/10 mintues there was a message informing me that invalid security IDs had to be replaced on files ...and the screen scrolled through thousands of files. When I was finally able to log on to my account (which was the administrator account from the time I upgraded) I found I had lost access to all of my files (docs, music, etc.) and now needed to choose to run Outlook as an administrator for it to work. (Prior to yesterday, all I needed to do was click on the Outlook icon in my toolbar to open the program and retreive mail.)Anybody have an idea of what happened? How can I have the system recognize my user account as the administrator? (It is a step backward to have to now right click and select "run as administrator" to use Outlook 2007.)Jan