>>11 you do not need to know the name of your computer, some proxie sites only require you to get to them and type the address of the site you wish to get on.
here is a list of proxies, i have never used any of these so i cannot gaurentee they are safe to use but, if they work more power to you. also there are some you can put onto your thumbdrive. LOVE GOOGLE NOW!!! http://www.proxysites.net/