Extract contents of archive to IL2 directory.
Two files 
%IL2DIR%\dump.dll
%IL2DIR%\bin\hotspot\jvm.dll.patch 
should appear. 
Check original JVM version 
%IL2DIR%\bin>java -version

Output is supposed to be
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)

jvm.dll  765952 bytes long

rename original jvm.dll to something like jvm.dll.sav and jvm.dll.patch to jvm.dll
Start IL2
Classes will be stored in C:\DUMP 

H.rnet