> get 1.1b16 and take a look at the magic shaper wizard. ;)
> 

More: if you need specific rules, you can look at the generated rules, 
pipes and queues to get an idea of how it works.

Then, you can modify them or add custom rules. If you can't find a 
specific P2P protocol that you need to limit, let us know so that the 
next release can include it.

I also recommend to read the source code if you really want to figure 
out how it works.

-- Vincent