Cannot connect xbox 360 to PC running vista

Windows Media Center setup on your Xbox 360 Begin by connecting your Xbox 360 to your home network. The Introduction to Home Networking guide on the Xbox website will provide information if you're setting up a network for the first time or if you need some guidance for adding the Xbox 360 to your existing home network.

Once your Xbox 360 is connected to your network, begin the Windows Media Center setup process by pressing the green button on your remote control (if you have one), or use your game controller to select the Media Center option from the Media tab in the Xbox 360 on-screen menu.

You are asked if you want to connect your Xbox 360 to a PC running Windows Media Center in Windows Vista. Select the Media Center option to continue.

Once your Windows Vista-based PC has been detected, your Xbox 360 will display an eight-digit code. Write down this code on a piece of paper, and then go to your Windows Vista-based PC.
Note: When connecting to a Windows Vista-based PC, you do not need to select Continue or download additional software.
Add your Xbox 360 as an Extender to your Windows Vista-based PC Important: During the setup process, the Windows Firewall is automatically configured to enable your Windows Media Center Extender to connect to your Windows Vista-based PC. If you're using extra security software that includes a non-Microsoft firewall, you may need to manually configure your firewall to ensure a successful setup and connection.

With your eight-digit code in hand, begin by selecting Windows Media Center from the Start menu in Windows Vista. From the Windows Media Center menu, select Tasks, and then select Add Extender. This will begin a simple, step-by-step path that will add your Xbox 360 to your Windows Vista-based PC. During this setup process, you will be asked to provide the eight-digit setup key you received from your Xbox 360.
Click through this preview of the setup to familiarize yourself with the process.

The Extender Setup screen provides an introduction of the steps you'll go through to add an Extender to your Windows Vista-based PC. Click Next to start the process.

Enter the eight-digit setup key you received from your Xbox 360 (the one that you wrote down on your piece of paper, right?), and then click Next.

The setup process will need to make changes to your Windows Vista-based PC settings to establish the connection to the Xbox 360. Click Next to continue.

Review the information provided about Away Mode. Make your selection, and then click Next.

The setup process will ask if you would like to share media with the Extender. Select Yes (recommended) to share media folders, and then click Next. If you are using User Account Control, you'll see a User Account Control dialog box that will seek your permission to run the Windows Media Center Extender Configuration. Select Continue to grant permission.

Your PC will now go through the remaining steps to configure itself and establish the connection to your Xbox 360.


That's it! You're done! When you're finished with the PC setup, go back to your Xbox 360, and start enjoying access to all of the digital entertainment stored on your Windows Vista–based PC through your Xbox 360.
Optimize your home network The quality of your entertainment experience, especially video playback, is dependent on having a reliable and high-performance home network. To help ensure the best performance, we recommend that you run the Windows Media Center Extender Network Performance Tuner during the setup process on your PC. The Network Tuner provides very specific feedback on your network, as well as tips to solve any potential problems.
You can click through the preview of the Network Performance Tuner to familiarize yourself with the process.

The Network Performance Tuner runs diagnostics on your home network and provides feedback on potential issues that would make your Windows Media Center experience less than optimal.

When analyzing the network, the Network Tuner provides specific feedback based on all of the components connected to your network.

The Network Tuner provides feedback on the types of media that your network may have trouble handling effectively and suggests corrective actions than can help to solve the problem

The Network Tuner also looks for performance issues related to how your network is set up. In this case, the fact that the Windows Vista-based PC and the Xbox 360 are both connected wirelessly to the router may cause performance issues. You'll only see these warnings screens when the Network Tuner has detected a problem.

Real-time feedback is offered through the Network Tuner, so you can see if the adjustments you make to your network improve the performance.

Regards,
Shrey