i noticed the advice given was for airpot express and you have extreme.
use v5.5.1 of firmware only on extreme.
go to www.zensupport.co.uk/knowledgebase/article.aspx?id=10156
this article explains explains how to set up the airport with the dsl 300t
hi
there is an article at www.zensupport.co.uk that describes exactly how to set this configuration up as i used it to get mine going. Just one thing though check what firmware is running on the Airport as if you have upgraded to the latest 5.6 i would suggest down grading it to 5.5.1 as v...
