> Well, HTTP geocoding is available, so your VB app could issue a
> request like 
> http://maps.google.com/maps/geo?q=main+st+toronto&output=xml&key=KEY
> (you should use a key) and then parse the result.

I tried using the URL you specified, just within browser (i.e. outside
of my WinForms app.), and it works. However, I am not clear as to how
I could "issue a request" from within my WinForms application. Do I
have to use a form with a WebBrowser control, navigate to the URL,
passing necessary parameters, and then parse the resulting contents of
the WebBrowser? Or, is there an easier way? I'd rather not have to use
a form for this as I'd like to be able to make these "calls" "behind
the scenes".

Is there a way to do "bulk" lookups, passing multiple addresses at the
same time, and getting a set of results back?

> Do take note of the Terms of Service. To use Google's geocoding, your
> app must be freely available to anyone who wants it; it must plot the
> results on a Google map; and it must not make bulk downloads of data
> possible. There are also restrictions on the rate of geocode requests:
> 300 addresses might take 5 or 10 minutes to complete, if it doesn't
> fall foul of the "bulk download" restriction.

As to the restrictions you mention, if we decide to go with Google, my
client would be purchasing premier, in which case, I would assume, we
wouldn't have to make the app available to the public.
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