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GPS/Routing /Mapping problem

P: 11
Hi all,
I am trying (i know this is going to be very complex, but looking for somewhere to start) an there appears to be nothing similar on any forum; many hours of google'ing!

I have written a program for a distrubution job, my program loads in data from an excell spreadsheet (this is how i get given the data) it contains 100-300 addresses.
The program then reads the address to me (through the speech lib), an plots a marker on a map as to its location. (the map is currently just a png image)
Also it plots the current location of 'Me' through the use of a gps reciever.

I am wanting to know how to get my program to calculate/draw the shortest line on the map between the 2 points, BUT following roads not a direct line. I understand that this may require something other than a png image for the map, but am not sure what, any help or suggestions would be much appreciated

I am using: Windows XP(tablet edition), Vb2005.

Many thanks
Jun 27 '08 #1
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