You'd probably get a better response to this in the HCPC forum

.. the quality of picture you can expect from a PC will be greatly better than a 1910, though it may take a bit of twiddling to get there. There are several software DVD players, a popular one (that I use) is TheaterTek and around £45 IIRC. You'll also probably need a utility called Powerstrip to set the desktop resolution to match the projector, c. £20.
Beyond that there are several other bits and pieces you could consider .. the PC route isn't without its' temptations.