deepblue was one of those who suggested anonymizer. deepblue is a regular on the forum so you could try sending deepblue a pm to ask if he is aware of how to go about using it with LW or an alternative. Steganos was another he suggested. I know nothing about these programs.

But do you need to be annonymous. Why not persist with using proxies. I have been told you need to keep trying different proxies before you'll find one that works.