Home Computer Network-Privacy?

I have recently moved home from college and will be using my parent's wireless network while I live with them. I want to know if my brother (who also uses the network) can see my info (websites visited, emails, im convos) if we share a network. He's pretty tech savy. Also, can he see the actual screen of my comp, like if I'm using a media player to watch dvds while still connected to the network? I don't really have anything to hide, I'd just like a little privacy. Is there anything I can do to up my privacy if I don't control the network?

Home Computer Network-Privacy?
It is possible for your brother to view the websites you've visited because all of your network traffic is probably going through a wireless router and there is a setting on the router to log all incoming and outgoing traffic. You can attempt to hide the websites you go to by going through a proxy server. Here are a few to get you started:





http://www.blackboxsearch.com/


http://www.surfundercover.com/


http://www.hidemyass.com/


http://www.invisiblesurfing.com/





You can use these sites to redirect you to sites that you actually wanted to go to and it will show up in the log that you went to "invisiblesurfing.com" instead of "someothersite.com". as far as reading emails, im conversations or anything else like that, It would require an amount of hacking and hopefully your brother respects your privacy enough to not attempt to hack his way into your computer over the network.