Hi,
I have an external application holding information about all my
contacts (100.000) and i would like to access these contacts, what is
the best way to do this? I can reach this application through a
webservice.

The best help I have seen so far (on external contacts) is importing
them into public folders, but with the amount of contacts this is not
very useful to me.

Any help/hint in what direction to go is much appreciated!
Bjorn