Hi I've copied the above from this website <a class="postlink" href="http://www.whizblaze.com/network/vista.htm#Configure" onclick="window.open(this.href);return false;">http://www.whizblaze.com/network/vista.htm#Configure</a>
there are pictures on the website so might be more useful looking at it
Basically what you will need to do is match the encription settings on your pc with the router
it will look something like the above
Hope this helps
Click Start, right-click Network, and then click Properties.
In the task list of the Network and Sharing Center dialog box, click Manage wireless networks in the left pane. From the Manage Wireless Networks dialog box, you can add a new wireless network, remove a selected wireless network, obtain the properties of the wireless network adapter, and choose the type of profile to assign to new wireless networks (applies to all users or the current user).
To view or modify the properties of an existing wireless network, in the Networks you can view and modify list, right-click the network name you are connecting to and select Properties.
To modify encryption and security settings, in the Wireless Network Properties window, select the Security tab.
Connection Tab
Security Tab with WPA-Enterprise settings
WPA – Personal Settings
