Fine!
There are two solutions actually, one for the professional edition only (aMule-MSVC) and one which also works with the Express Edition (aMule-MSVCE). I think I've added the lib only to the latter.
GeoIP displays the nice little flags, no more, no less. If you want them, use it, if you don't you lose nothing if you build it without. For the remote GUI it's not as useful as for the monolith since the sources can't be displayed yet.