I've never used an Actiontec router, but, if it's wireless, then you should easily be able to use the laptop wirelessly. It won't matter whether you have any other PCs or not, you can still use a router even if you only have one computer. Just connect the router to the STB (& reboot both), & set up the wireless for the laptop (& don't forget to set-up wireless security! at least WEP, preferably WPA though).