Newb: installing Jython on Windows XP ...

[donkeyboy]

All,

I'm having issues installing Jython on Windows XP. I've looked on the
web and this newsgroup but to no avail. Any suggestions? The shell
listing is below:

NB I've got Cygwin installed, hence the Unix 'ls' on a Windows box

C:\>cd Jython

C:\Jython>ls
jython_21.class

C:\Jython>ls "c:\Program Files\Java\jdk1.5.0_09\bin\java.exe"
c:\Program Files\Java\jdk1.5.0_09\bin\java.exe

C:\Jython>"c:\Program Files\Java\jdk1.5.0_09\bin\java.exe" jython_21
Exception in thread "main" java.lang.NoClassDefFoundError: jython_21

C:\Jython>"c:\Program Files\Java\jdk1.5.0_09\bin\java.exe" jython-21
Exception in thread "main" java.lang.NoClassDefFoundError: jython-21

Any help would be of great use!!!