Ok, I've had my computer set up fine for the PS3. However, my PS3 is wireless. My Xbox 360 is wired as I refuse to buy such an expensive adapter. I have my 360 wired to my wireless router, the same router that my wireless PC is connected to. I am able to connect to the internet and XboX Live. But, my PC can't discover the Xbox in media sharing in WMP nor does my Xbox discover my PC. If I look under network in my computer, the Xbox is listed there. I put my Xbox in the DMZ and I enabled Universal Plug and Play. I also double checked all required services are running on my computer.
I am using a Linksys WRT54GL wireless router with Tomato firmware.
Edit: looks like I forgot a step. I opened the required ports for my PC and restarted my network on the computer. Now I get the icon in media sharing in WMP. But it's still not working. I was able to see my computer listed on the Xbox once, but when I clicked it it wouldn't connect.
Last Edit: Ok, got it to work. I went ahead with a router reboot and that got everything running. YAY!
Edited by Aumelen, 10 March 2010 - 10:15 PM.