> Do you have a sample of a cv using this class, that might give > me an idea of what goes in the preamble and how it works? There are a number of example LyX files posted on the Wiki page. Is that what you mean? There's even one TeX file, which should be readable regardless of LyX version or moderncv version.
If you're looking for a more current LyX file that takes advantage of the updates to moderncv, I'm no help.