Don't hold your breath!
Netflix seems to be unwilling to allow the use of media cneter extenders to acces their content (even though you can access it from the main media center PC).
The most plausible way ahead would be for D-Link to directly support Netflix in the firmware (i,e. not as an extender), but firmware support for the DSM-750 seems to be a dead topic (see the other threads). If you want an extender with Netlfix access, get an Xbox.