Earlier: "... my school blocks at the least 95% of all proxies. I try and browse through wikipedia and it tells me that it is wikipedia is using a proxy server known as http://privacywant.info. Is this something that has happened to anyone else before, or is it just particular on mine.,,"
See http://www.google.com/search?hl=en&q=privacywant.info&btnG=Google+Se... for web references to "privacywant.info". http://proxy.org/proxies_defunct.shtml lists it as defunct. Perhaps someone before you hacked into the computer and used that proxy a long time ago and the computer has never been fixed. Is it a Windows computer? Can anyone here assist in clearing proxy settings (other than Control Panel > Internet Options > Connections > LAN Settings > uncheck "...privacywant..." if it's there)? Alternatively, ask around and see if other computers at school work, and see if they use a proxy or not, and either use another computer or copy the working proxy settings. A daily Google search for "proxys / proxies that work from school" may help. ;-)
Or, I wonder if your school is running software from http://www.privacyware.com/ and you are seeing messages on your screen from your school's own software. I do not believe Wikipedia sends out messages saying "...privacywa..." anything, so it's probably a message form your own school.
Back at ya, are you unable to see WikiPedia, or any part of WikiPedia, or what? I presume you can't get into Wikipedia, is that right? English Wikipedia? Try:
http://en.wikipedia.org/wiki/Main_Page
Also, tell us your school's name, address, phone number, email and web address - and your Principal's name and contact details. Maybe we can hack back in and kill that filter for ya' - jus' kiddin'! ;-) No, maybe we can contact them and get them involved in the Wikipedia project and help them become less afraid of the unknown. "Fear of the unknown" is a sad, sad thing for anyone in a position of influence to fester over kids who are naturally hungry for everything that is unknown!
Tell us what you'd like us to help you with, and please follow up and let us know how it goes.