put the family pics to a few cd's perhaps? But I guess if you scratched the cd's you would also want them on your hard drive. for a start you could just hide the folder and see if they know how to show the folder again.
To do this: right click the folder and click on properties. At the bottom there should be 3 options for your folder, click the hidden box, then apply, then click ok.
To see the folder later go to tools/folder options, click on the view tab, then say show all hidden files or folders or whatever it says, then click apply, then click ok.
If what I said is incorrect someone please tell me, I am not a genius when it comes to computers.