there is a thread with 1000+ proxies you could use one of them
or if you want to be very safee try searching the web for SSL proxies... they are very very safe
@tarey_g
a company cannot terminate an employee just because he uses proxies

a proxy can be use to browse allowed sites also to protect your privacy online

since the url is encoded while using proxies no one knows which sites you have browsed... but they may block the proxy also later on... then you can use some other fresh proxy
but its good to know clearly your companies policies and agreement which you signed before joining.
at the max a company can give is a warning.. but I never heard any of my friends saying so
_