I know of two ways to get around websense. The first is the one where you copy and paste the url of the site you want to go to into google languafe tools and translate it from german to english. It will then take you to the site you wish to go to.
The other way i know also uses google and all you have to do is search for the site you want and then hit cached wich is under the description of the site and is a clickable blue font.
These ways should work altho lately websense has increased their security persay and there are some problems. So you can try them out and hopefully it will work. ^