Turn Your Windows 7 PC Into a Wireless Hotspot
Here’s how to get your iPod touch, iPhone, or other wireless device connected, if all you've got is a wired network . We’ll be using Win 7 for this process.
You should make sure that you've got a laptop or desktop with a wireless card that isn't currently connected—if your laptop is connected to the wired network, your wireless card should be free, and you can use it to allow access to the internet. Note that you have to be plugged into a wired connection in order to share the connection wirelessly with others, or have a second wireless card.
Right-click on the network icon in the system tray and click on Network and Sharing Center. Once you are there, find the link for "Set up a new connection or network".
You'll be prompted with a wizard, choose create a new ad hoc wireless network.
You'll need to give your network a name and choose some security options choose WPA2 with a good length password. The really important option on this page is to remember to check the box for "Save this network".
Your ad hoc network should now be running and ready to start connecting your devices, but you'll want to hold off just a minute.
The last step is enabling connection sharing through your regular network card. To do so, you'll want to head into the Network and Sharing Center again, click the "Change adapter settings" link on the left, and then find your network connection in the list—it's very important that you only enable internet connection sharing on the adapter that is actually connected to the internet.
At this point, you should be able to connect any wireless device to your new ad hoc network and access the internet.
Remember, any problems with your computer I’m here to help. Just call!