1. Make sure the harvard package is installed in Latex.
2. Copy the CRPITStyle.cls class file available here to your localtexmf/tex/latex, and make sure you refresh the Latex database
3. Copy CRPITStyle.layout into Lyx’s layout folder (C:\Program Files\LyX141\Resources\layouts for me)
4. Open Lyx, Run Tools -> Reconfigure (you may also need to use Tools -> Tex Information -> Rescan)
5. Unzip this file somewhere
6. Open CRPITPaper.lyx
7. Modify the file to your hearts content (this one is setup for VisHCI 2006)

Let me know if this doesn’t work for you, as it took me some mucking with refreshing Latex and Lyx to get it to work, so I may have missed something in my re-telling.

First Create a new layout file called spconf.layout in your Lyx layouts folder (in my case “C:\Program Files\LyX141\Resources\layouts”) with the following contents:

#% Do not delete the line below; configure depends on this
#  \DeclareLaTeXClass[article,spconf.sty]{article (spconf)}

Input article.layout

Preamble
        \usepackage{spconf}
EndPreamble

This will create a new document layout in lyx called “article (spconf)” that will be identical to article, but adds \usepackage{spconf} in the document preamble.

Now we need to fix up some of the header information. spconf uses \name instead of \author, so we’ll add that to our file:

Style Author
        LatexName       name
End

And finally, we need to add an affiliation section that uses \address in LaTex, and is used when the \maketitle command is used:

Style Affiliation
        LatexType       Command
        LatexName       address
        InTitle         1
End

There, that should work. Make sure that spconf.sty is stored where latex can find it (normally the same folder as your lyx file). If you want to download the entire spconf.layout file it is available here.