***UPDATE***
Okay, I did it!!!!
Under the Customize User Interface, change the viewport background color to R-1, G-1, B-1. I also changed the Viewport Gradient Bottom and Top to this setting as well.
I right click the "wireframe, shade, etc." settings and changed my background to "solid color" and I'm getting a white selection window instead of black. My gridlines are also set to "white"
I saved the setting and closed out of Max. Here's where I get a bug issue. Even though I saved the interface setting, when Max reopens, the gridlines are mainly white, but the "main" grid lines revert to black. However, the selection window is still white.
Adam