Your best bet may be to use the static map APIs
Bing:
http://msdn.microsoft.com/en-us/library/ff701724.aspx
Google:
https://developers.google.com/maps/documentation/staticmaps/
Read in your excel file, generate the url based on the xy coordinate and zoom level using a stringConcatenator and pass to the HTTPFetcher. A decelerator may be necessary.
Depending on the coordinate system of your XY points you may need to convert them first.
I've never used Bing, but for google the target URL for the HTTPFetcher was:
http://maps.googleapis.com/maps/api/staticmap?center=@Value(_y),@Value(_x)&size=@Value(size)x@Value(size)&zoom=@Value(zoom)&maptype=satellite
where _y and _x is my center point lat and long values
size is the number of pixels of the resultant image
zoom is the required zoom level