Some links that help you plan your trip:

Curaçao.com, for business and tourist information.
Curacao-travelguide.com, for tourist information.
Curacao-tourism.com, the web site of the Curaçao Tourism Board.

Links that help you find your way when you are on the island:

K-Pasa, the online version of the weekly leaflet of all the activities on the island.
Kiko ta Kiko also provides information on current activities.
The Movies, to see what's playing in the local cinema.
Online roadmaps, if you want to know where to go.