A direct access driver solves limitations of DirectX operation under the Microsoft architecture when using multiple monitors. The direct access driver allows applications employing DirectX application program interfaces to use hardware acceleration without display errors on the monitors. Display errors can occur if multiple frame buffer addresses are returned in response to "GetFrameBufferAddress" DirectX calls. A single address is returned for two or more frame buffers on a display driver card by performing, without the DirectX application's knowledge, background operations that track hardware acceleration demands from two or more graphic user interfaces and frame buffers. The background operations entail constantly changing the frame buffer pointers relative to the location of offscreen DirectX application data, while one or more DirectX applications are moved in the display space from monitor to monitor.