We recently made the switch to Skype at home and while generally happy with it, there has been a bit more choppiness to the voice connection than we would have liked. Our first question was whether or not it was related to our new internet service (Comcast cable instead of Speakeasy DSL). I then remembered that part of the solution for fixing our last VoIP-ish service (net2phone) was increasing the priority/quality-of-service settings for net2phone traffic. I started looking for what ports Skype uses, shuddering at the remembrance of the non-stop popups that occur while using Skype on a PC with a personal firewall running, then saw this amazing screen on my new Linksys SRX400 802.11 pre-N router:
All you have to do is choose Skype from the Applications menu and then click "add". Go Linksys!