Traffic Shaping

I have to limit the bandwidth for a lot of IP classes, but my question is if i can make someting like:
- <rule>
  <interface>wan</interface>
- <source>
  <address>file_with_IP_classes</address>
  </source>
- <destination>
  <any />
  </destination>
  <direction />
  <iplen />
  <iptos />
  <tcpflags />
  <descr />
  <targetpipe>0</targetpipe>
  </rule>

to read automaticaly from that file the IP classes listed there... Excuse my english...I hope you understood my question

No one can help me?