I found this http://www.jarober.com/blog/blogView?showComments=true&printTitle=IM_98:_Rtalk&entry=3527672794 ,about RTalk , that is not only smalltalk run on top of JVM but almost the entire environment. 

The problem is that I cant seem to be able to find via google any site that contains the source code or something I could use ? Does anyone know if there is any official website for RTalk ?

It looks quite promising and I would like to give it a try.