Traffic Shaping with IPFW question

[Forrest Aldrich]

Is it possible to shape traffic (limit consumption) from specific ip ranges?

For example, I have some files that are usually pulled down from one 
customer - when they do this, it eats up a lot of traffic - if I could 
limit the bandwidth from my site TO theirs, it would be better and wouldn't 
interfere with other operations going over the interface.

I tried looking for a "howto" on this...



Thanks.