Some workplaces filter web surfing using surf patrol and other programs.

I believe that there are some websites that enable you to surf other
website in their window - but still resolving their own address -
enabling you to get round a companies web filter.

Can anyone let me know the address of one of these sites?

Thanks

Insh

Hello inshallah-ga 
http://answers.google.com/answers/threadview?id=397095
points to some anonymizers . While the researchers post an answer u
can familiarize with them. Some ought to give privacy as they claim
they are encrypting the requests .
I don't know how far u can escape from the network admin in ur workplace

You may want to download Netscape or Firefox and use it as your "open
browser", enter an alternative proxy for your HTTP connections and
that will bypass the blocks, however, if your IT manager or other
managers are monitoring what you do on your computer it may not be the
most intelligent thing to do and could be grounds for dismissal.

The only problem with the list mentioned above is sometimes the
filtering software will block access to them.Use this page
http://www.space.net.au/~thomas/quickbrowse.html if that happens.