Hi There, 
I am looking for a reference guide, or paper that will allow me to
plan accepteable user loads accessing a web server with a business
application. For example I would like to know how to calculate the
following kind of test:

If there are 10 broadband users all with 256k connections to the
internet, and the target web server sits behind a 2 Mb connection.
Given that each user will be downloading a 1 Mb file each minute, how
many conncurrent users can it sustain? How long will it take each of
them to download the file e.t.c.

I hope this gives you an idea of my problem - Calculating what load of
users a given internet connection will support, from the perspective
of the web server!