prioritize traffic

Can anyone help me to prioritize normal browsing before p2p

Mark packets using IP Firewall Mangle, then set their priority and speed limit in Tree Queue. Here is an example: http://wiki.mikrotik.com/wiki/TransparentTrafficShaper

More examples: http://wiki.mikrotik.com/wiki/Bandwidth_Managment_and_Queues
Good one: http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service

Let me explain my setup

Adsl router 192.168.0.1

lan cable to ether1 on routerboard 433 ip 192.168.0.2

2 wan interface with ip adress 192.168.1.1/24 2.4
other 192.168.2.1/24 5.8

clients get dhcp direct from dhcp-server on wan interfaces.

can you help with this