How to Get your Xbox 360 online wirelessly with an old router and free software Time: 30 minutes Cost: $15-$50 Items Needed: Xbox 360 Router Before buying a router for this project, check dd-wrt.com to make sure the specific model is supported. If so, download the right version of the software to your computer. Follow the installation instructions on dd-wrt.com for your specific router model. This may require you to change your computer's network settings. Connect the router to your modem and your computer with Ethernet cables. Update the router's firmware with the DD-WRT software. Enter the router's IP address(local ip)in your computer's Web browser, which should now bring up the DD-WRT interface. Change the router's settings to "client mode." This enables it to receive an Internet signal from your original router. Disconnect the cables, and restore the original network settings on your computer. Place the router near the Xbox 360 console, and connect it with a short Ethernet cable. Turn on the console, and connect to Xbox Live. I did not make this.