Cavan1,
Yes, what you wrote is true. And I owe an apology to aufisch in that I was using the terms which are common when using StyleXP.
What WindowBlinds calls "skins", StyleXP calls "Visual Styles". What WindowBlinds calls, "Suites", StyleXP calls, "Themes". But in the Theme Manager menu/tree on the left, WindowBlinds calls "skins" "Visual Styles", which makes for some confusion. And even more confusing is that Theme Manager calls "msstyles" (Visual Styles) files "MS Themes".
However, despite the confusion in the use of terminology, I now understand what the "MS Themes" item is and how it can be used.
THANKS