QUOTE:
Keep in your application a linked list per pushpin group. Keep them in a structure or class that also holds the latitude and longitude. Then you can do easy this calculation in your own application if you only need the distance to the birds eye of view.]

Ok,

sorry for replying late. Had to find out first how i can get latitudes and longitudes of the pushpins.

I can get the latitude and longitude from the pushpin tool, right? And then i keep them in linked lists per pushpin group.

In the next step i want to receive the distance (as the crow flies) from each of the 5,000 addresses to the closest pushpin of each pushpin group (and the name of that pushpin). Probably its the best to keep these addresses in latitudes and longitudes, too.

Would you mind to send me an eg. of a vb reference that gives back the distance of the closest pushpin of "pushpin group A" (and the name of that pushpin) to any coordinates (in latitudes and longitudes).

Thx in advance for helping a mp dummy