I couldn't help but notice the 'hiding porn' thread and peoples general lack of knowledge when it comes to hiding those questionable files.
I've posted this somewhere in a thread before, but I thought I may as well post it again.
Go to your C: drive and right click, make a new folder and give it a name.
Now. Go to start - Run
You'll now have a little bar up, waiting for text.
Type this in exactly
attrib +r +a +s +h c:\foldername
Now go to your C: drive and right click refresh, the folder will disappear. The only way of getting to it now is to type it in at the navigation bar at the top.
If you can't be arsed, I've gone ahead and wrote you a batch script that you can just double click. Once you've done that, just go to your main homedrive and add hiddenstuff to the end of the directory name. Job done.
Hidden from 'Search' function, hidden from 'view hidden files', none deletable until attrib -r is specificed.