I bought it in Australia, when i got back home (UK) i went to windows explorer and deleted the Australia map and replaced it with Great Britain map from a disc i had. When i turned on the device it says that it needs to be activated with an acivation number and a web address. When typing the code into the site it says it's an invalid. Also i forgot to mention if i just tap ignore on the tom tom, it says i cannot use 'great britain' map and then goes back to the activation code screen again???? Please help as tom tom have not got back to me for two messages now!

Use hidden international wallpapers and themes in windoes 7

When you first install Windows 7, it asks for your language, time and currency. Based on your responses, it installs a set of wallpapers and themes. If you choose English (United States) for your time and currency format, for example, the available desktop backgrounds and themes will include a United States section with scenery from locations such as Maine, the Southwest and so on.
Hidden, though, are background scenery and themes from other English-speaking countries -- Australia, Canada, Great Britain and South Africa. Normally, you can't access those backgrounds or themes, but there is a simple way you can install and use them:

1. In the search box in the Start menu, type C:\Windows\Globalization\MCT and press Enter. (Note: If Windows 7 is installed in a drive other than C:, use that letter instead.)

2. Windows Explorer will launch and show you a list of subfolders under C:\Windows\Globalization\MCT: MCT-AU, MCT-CA, MCT-GB, MCT-US, and MCT-ZA. Each subfolder has wallpapers for a specific country: AU for Australia, CA for Canada, GB for Great Britain, US for the United States, and ZA for South Africa.
For any of the countries whose wallpaper and themes you want to use, go into its Theme folder, for example, C:\Windows\Globalization\MCT\MCT-ZA\Theme. Double-click the theme you see there (for example ZA).

3. That will install a shortcut to the theme and wallpapers in the Personalization section of Control Panel.
You can now use them as you would any other theme or background, by right-clicking the desktop, choosing Personalize, and choosing a background or theme. They will be listed in their own section.

Use hidden international wallpapers and themes

When you first install Windows 7, it asks for your language, time and currency. Based on your responses, it installs a set of wallpapers and themes. If you choose English (Australia) for your time and currency format, for example, the available desktop backgrounds and themes will include an Australian section with scenery from locations around Australia

Hidden, though, are background scenery and themes from other English-speaking countries -- United States, Canada, Great Britain and South Africa. Normally, you can't access those backgrounds or themes, but there is a simple way you can install and use them:

1. In the search box in the Start menu, type C:\Windows\Globalisation\MCT and press Enter. (Note: If Windows 7 is installed in a drive other than C:, use that letter instead.)

2. Windows Explorer will launch and show you a list of subfolders under C:\Windows\Globalisation\MCT: MCT-AU, MCT-CA, MCT-GB, MCT-US, and MCT-ZA. Each subfolder has wallpapers for a specific country: AU for Australia, CA for Canada, GB for Great Britain, US for the United States, and ZA for South Africa.

For any of the countries whose wallpaper and themes you want to use, go into its Theme folder, for example, C:\Windows\Globalisation\MCT\MCT-ZA\Theme. Double-click the theme you see there (for example ZA).

3. That will install a shortcut to the theme and wallpapers in the Personalisation section of Control Panel.

You can now use them as you would any other theme or background, by right-clicking the desktop, choosing Personalise, and choosing a background or theme. They will be listed in their own section.