Have you actually "Connected" to the wireless network? In other words, have you run the Belkin software, scanned for "Available Wireless Networks", found and highlighted the one that matches your router's SSID (network name) and selected the option to "Connect" to it? Once "Connected", the wireless adapter should get its IP address by DHCP from the router and you should have network and internet access.
There is a difference between the Wireless Network Adapter and Router communicating with a good signal and "Connecting" (as in "logging in") to your Wireless network.
At the moment the "169.254" IP address indicates that the wireless adapter has failed to obtain its IP address from the router and Windows has allocated a default IP address. This will not let you access the network/internet. Once "Connected" to the wireless network, the adapter should get an address from the router which will probably be a "192.168.x.x" address.