Welp... installing the new drivers has indeed given me access to the NVIDIA controls and I have indeed been able to nudge the screen around and do all sorts of other wackiness...
BUT
I cannot seem to get the resolution just right. The image is centered now and everything looks great... but the edges on the left/right are ever so slightly cut off. This would not bother me so much if it weren't for the fact when opening Sonar, for example, in the control bar the CB module nav buttons are almost completely cut off (amongst other things). That is just an idea of how little, but too much, is being cut off. Every other combination of settings stretches things, makes things WAY too huge, brings back the black bars, etc, etc...
There is a custom adjust setting in the NVIDIA options that allows me to "fine tune" such things (which pops up a massive warning about equipment damage and liability and yadda yadda that I do not understand) and the LG manual says to set things to 1366x768 which I tried. When I do set it to that things go sightly off kilter and slightly stretchy in the wrong directions. Ugh.
I guess MAYBE if I screw with those settings enough I might get things looking normal but that warning was really quite alarming. Not sure if it will even work and I'm getting cranky at this.
Darn you XLN and your slightly too large AD2 GUI. I was perfectly content bumbling about with my vertical black bars.
lol
Anyway... lots of progress based on all of your help, at least in regards to getting my graphics card sorted out. I think this "monitor" is just kind of screwy. Maybe an HDMI cable needs to be purchased or something (whcih I ain't doing any time soon).
For now I have three options I guess...
1) Go back to vertical bars and being annoyed by AD2 and the reminder of my own incompetence
2) Somehow see if I can live with the edges of everything else being slightly cut off
3) Deal with the stress of throwing caution to the wind, ignoring that weird ass warning and fine tune the settings until I get something useable... which may not even be possible anyway.
Oof.