I am trying to prioritize Skype traffic on my Linksys WAP running Tomato. In several tutorials I have seen Skype traffic prioritized using a mac address or an IP or specific port number for Skype hardware devices. That really is not going to work well for me. I have several PCs running the Skype client all with different ports specified for incoming calls in Skype setup. I would like to prioritize all Skype traffic for all these PCs. I currently set this up using the L7 filter: skypetoskype. I've read that this is not ideal as the L7 filters are processor intensive. How should this be setup?