Today's applications for mobile computers are inadapted: mobile users must foresee disconnections and plan manually what they will need during these disconnections. To avoid this, our project aims at reconciling transparency with adaptability and flexibility for these users. It is based upon mechanisms for referencing remote objects, and for flexible binding, allowing on-the-fly replication and policy changes. This system-level support hides the disadvantages of disconnected operation, moves, unavailable data or servers, etc. Our project, in its early development phase, already provides support for disconnection and reconnection of references to arbitrary objects.