1. Click the start button
2. In the 'Search' box at the bottom type: cmd and press the enter button.
3. At the command prompt type: netsh and press enter.
4. Now type: wlan and press enter
5. Now type this: set autoconfig enabled=yes interface="Wireless Network Adapter" and press enter.
By default, Vista enables the WLAN AutoConfig, so that your computer's wireless network adapter will automatically recognise and offer any wireless network within range. For some reason your Vista installation is telling you that it has disabled the facility.