So if I understand your first post correctly you cannot switch to Direct3D or OpenGL? Do other Direct3D Apps/Games run at all? S9X doesn't really require that much from D3D.
No, that's not it. I was unable to run it in Direct3D, and OpenGL's video quality isn't where I want it to be at all, so I'm running it in DirectDraw.
VSync in DirectDraw may or may not work - in your case it obviously doesn't.
Does switching to OGL give you any additional error messages?
No, but that has its own host of video problems.
Just for the record, I'm currently settled on v1.52 fix 4 (I understand it's no longer supported), which gives me a less significant screen tear than 1.53. I may try a few other v1.52's to see if the screen tearing can be neutralized, but I'm just happy the versions past 1.52 fix the sound emulation, being the audiophile I am.
UPDATE: I've tried every version of 1.52 I could find, and had to switch to DirectDraw on all of them. The only reasonable conclusion I can come to at this point is that my integrated graphics card sucks big floppy donkey dick.
When I run DX Diag it passes all tests (version 7, version 8, version 9), and spits this monster out at me for the graphics card:
[Intel (R) 82915G/GV/910GL Express Chipset Family]
And since it's integrated, I'm stuck with it until I can afford a new computer. So thanks you guys for trying to help, but this one's a non-starter.