Check out http://java.sun.com/javase/technologies/realtime/rts/ The binary is downloadable with a 90-day evaluation license.
If you are still having problems send an email to Carlos.Lucasius@Sun.COM He'll help you with the download if you need it and will get you in touch with an OEM filed representative when you need a deployment license.
wow ... you were fast...just found the solution in the FAQ ...
+"Java RTS has an innovative pricing model that starts at $6500 per socket/CPU for development or internal deployment. This number includes one year of basic support. For commercial external and volume deployments, Java RTS has a value-based pricing model that scales to suit your needs."+
this is quite expensive... I am not sure if I can persuade my company here :(
and for my private projects is this definitely to expensive :( :(