Hi! First thanks for replying!
What you did sounds fine for getting the new class installed under MiKTeX. Just as insurance, you might open a command window and type 'kpsewhich new_class.cls' (without the quotes, and changing new_class to the name of your class file). It should spit up the path to the .cls file.
I did that, and it found it in the localtexmf directory.
LyX uses layout files to tell it how to display various document classes on screen. Have a look at Chapter 5 of Help->Customization for details. You may also find some help in the Layouts page of the LyX Wiki (http://wiki.lyx.org/Layouts/Layouts). I'm pretty sure that the LyX reconfiguration script only looks for class files for which LyX has an associated layout file, which explains both why you don't see many of the classes that came with MiKTeX and why your new class is not listed. If I'm right, you're going to have to cobble together a layout file to use with the new class (unless someone else has already done so).
I copied and renamed an existing layout file in lyx\share\lyx\layouts, then reconfigured lyx, but it still won't appear! Do I need to put it somewhere else as well or something?
Thanks! Lillian
