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#11
What i used to do in these situation would to change the extension of that file copy it to a location where noone would suspect even if they suspect without know what file is it they can't open it.
Ex. If you have a Word document SevenForum.docx change the File name and extension to something else like DataFile.zip so even if they double click it would say that Zip file is corrupt. This is the same process these Encryption program do but they hide it as well
Hope this helps
Captain
One sure way to protect the file is to delete your little brother's account, and not let him use the computer, or if you want to let him continue using the computer, give him only a guest account, which shouldn't give him access to any system files.
check out this program: Download Gili File Lock - Shareware Software - Tucows
Gili File hide and lock, works very well.
have you considered encryption software?