The proper link is: http://www.grid.unina.it/~vollero/resources/doc_ns2.27/html/index.html
But the documentation there is limited at best. I'm in the same boat as you. I've spent a very long time trying to understand the passing of events around, how to switch between classifiers, etc. I'd love to find someone who really knows NS2 and hire them as a consultant for a few hours just to answer all my questions! Paul Vincent Craven [EMAIL PROTECTED]