P2P, STREAMING, VOIP, traffic prioritization

how to give high priority to P2P, Streaming & VOIP traffic & mark to the the particualr Wan

thanks in advance

There is a large amount of discussions and resources available. Here is just one example. http://wiki.mikrotik.com/wiki/NetworkPro_on_Quality_of_Service

Search for “QoS” to find many other resources.