I had a look at the java tool website where it tells you about the -classpath option, and this link about classpaths. I don't think you need to specify . when adding to the classpath, and I don't think you are supposed to use quotes.
Try missing out the .; bit or the "s and if that doesn't work try the absolute classpath for spsswdemo.jar, ie starting with C:\
John Eric Hamacher
Joined: Apr 25, 2007
Thanks. The problem turned out to be the lack import statements in the Demo class. I love to download demos of a product that are broken!