I am curious if the internal vivitar camara (2.1mp) can be upgraded to the Vivitar Vivicam 3715 3.3 MP. If the internal camera for the DC250 is the VIVITAR 3625 (looks right to me.) then I think the 3715 should fit. Has anyone done this? If it were to work, I think you would essentiall have a dc310 for the cost of upgrading the internal camera.