That pretty much did it guys. As is obvious now, I only had a rough and warped idea of where shaders come from (I had seen references to downloading them for ePSXe). I understand that they won't actually give HD graphics, the smoothing is what I was looking for.
If you've ever played FFVIII with nothing more than upscaling, you know what I mean. It looks damn near like Robotron from the Atari 2600. I just want to smooth the edges where things aren't all minecrafty.
Thanks for the help!