Bandwidth throttling - anyone made it work?

Hi all again,
I'm trying to throttle my bandwidth but it doesn't seem 
work. I read all mail about that in this mailing list, and 
I made everything you suggested - making throttle.fw 
executable, loading all needed kernel modules... but it 
doesn't work at all. I would like to know if anyone of you 
can make the magic, or suggest me how can I get help. 
Thank you very much
Monica