Hi,
I have developed software for over 20 years, and have a long experience of most web-related technologies, including HTML, CSS, Javascript, jQuery, php, and more. I have successfully integrated maps, geocoding, geolocation and more in several websites.
Can you share the address of the existing map on your site so I have a better understanding of the current implementation?
I assume you want the results to be computed dynamically (as returned by Google), is that correct? Or do you want to have pre-defined itineraries entered?
Let me know if you can clarify the above points so I can give you a better estimate of cost and delay, or if you have any questions.
Note that I am based in London, which should make communication easier, as we would be in nearly the same timezone.
Jacques.