you could use Openlayers to overlay your data over google maps.

A low resolution satellite image (~250 m) is available for download as 
Blue Marble from the Nasa (world coverage), or a medium resolution (30 
m) from
http://geotorrent.org/details.php?id=72

armin

On 18/11/2008 23:53, Gabe wrote:
> Hi everyone
> 
>  
> 
> I have a requirement to provide a web mapping app for use in Swaziland and I
> have had a hard time finding any decent background data to display.  
> 
>  
> 
> Google maps has the same Lo-Fi vector data that I have but they have a
> reasonable satellite image.
> 
>  
> 
> I have considered (but not implemented) getting the googlemaps image as a
> backdrop to my map and then just request a new backdrop when the extent
> changes.
> 
>  
> 
> Im just wondering if anyone has done anything similar or has some thoughts
> about this - or if anyone knows of some WMS server that covers southern
> Africa.
> 
>  
> 
> Thanks in Advance
> 
>  
> 
> Gabe
> 
>  
> 
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