Sony Laptop - Home Hub 3 incompatibility

We have a BT Home 3 which allows a Toshiba laptop windows 7, two android phones, an iphone the TV and anything else we connect access to the home network and Internet. However, we have an older Sony laptop running Vista Business which now refuses to properly connect to the home network and Internet. It will only connect 'locally' and not recognise the hub. It says identifying then says 'unidentified' (public network BT Hub 3) and only has 'local' access. 
The strange thing is although it won't connect to my 'home' network properly it will gladly connect to the external BTWiFi or BTWiFi-with-Fon wifi broadcast by my home hub; although this allows me Internet access I cannot access any files on my other PC's etc or access the network WiFi printer.
All drivers are up to date on the Sony and the network card is obviously OK as I can connect to the external network, but I cannot understand why the hub will not allow me to connect to the internal network.
The laptop is a Sony Vaio VGN-FS485B and the network card is listed in the device manager as an Intel PRO/Wireless 2200BG.
Any ideas?

Other people with Sony laptops have had similar problems and this helped them.
It could be that you Laptop has IPv6 selected. Try disconnecting it by doing the following.
Select Start
In the Start Search field type ncpa.cpl and press the Enter key on your keyboard.
In the new window, right-click on your Wireless Network Connection and select Properties.
In the This connection uses the following items section, remove the tick beside (i.e. disable) Internet Protocol Version 6 (TCP/IPv6) and then press OK.
Left click on Internet Protocol IPV4, click on properties. Check the options to obtain IP address and DNS server address automatically.
Once done check to see if it connects to Internet.

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    somniac wrote:snipped
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    imjolly wrote:
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    Solved!
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  • Using a second Home Hub...

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