And please proof read your posts. Maybe I'm just a stickler for spelling, but last time I checked 'prtect' wasn't in the dictionary...
I think I remember a program or something called "Universal Shield". I know it blocked you from opening files that were protected by it, but I don't know if that made the files unchangable. I would think(I could be wrong) that those system files are apt to change...I mean, what happens if you want to update a driver which is stored in that directory?
Defining your account on the box as a normal user, and stopping the use of everything as a local administrator. That is the first problem. But be aware that a lot of your materials will not work, because of the flawed Microsoft Security Model.
Of course, that assumes that you are running Windows 2000 or later. If you are still living in 98 or 95 or 3.1, you are a local administrator anyway, and the above will not matter to you.
You still haven't told us what exact version of Windows you're using. We have two separate Windows forums- one for older (95/98/Me) versions and one for newer (2k/XP) versions. We'll know where to place your question once you give us the version you're running.