The story goes like this. I have a younger brother who likes to download Trojans. I gave him the guest account and set admin to private. I've had to reformat 3 times now which is really annoying and takes forever. Somehow he still manages to download things. Is there a way that he can use the internet on that account without downloading? Do I need a password, if so how would I set it up? I use bit torrent. If I put a pass on that hed still be able to download zip files.

help please.