I use MovieCollector to catalog my DVD collection. The program lets you manually input titles, description, etc. and it allows you to export to Html (thumbnail) sheets. You can use the capture capability found in almost all PC DVD player program, make it a cover that you can use for your index html pages.
A couple of examples:
http://www.collectorz.com/movie/temp...coversonly.gif
http://www.collectorz.com/movie/temp...kBusters24.gif