OK, I have it working now, thanks.
The behavior isn't quite what I expected, but that certainly is NOT a criticism.
I entered an href in an HTML file, opened quotes, entered "/" and then pressed CTRL+SPACE. The plugin brought up a list of files and directories which appear to be based off of the root (C:). What I was hoping for would be something more along the lines of "Browse..." which would just open up a standard Windows file dialog from which I could select the file I want without having to know the path.