Installation Problems

Hi,

I am a new user of Open CASCADE. I decided to build all Open CASCADE libraries for debugging (Win32, ros\win32\libd\*.lib).
There is the ordered list of workspaces to rebuilt:
· Foundation Classes (file FoundationClasses.*)
· Modeling Data (file ModelingData.*)
· Modeling Algorithms (file ModelingAlgorithms.*)
· Visualization (file Visualization.*)
· Application Framework (file ApplicationFramework.*)
· Data Exchange (file DataExchange.*)
· Draw (file Draw.*)
· WOK (file WOK.*)

Microsoft Visual C++ 7.1 generated some errors:
------ Build started: Project: TKjcas, Configuration: Debug Win32 ------

Compiling...
jcas_Transient.cxx
..\..\inc\jcas_Transient.h(1) : fatal error C1083: Cannot open include file: 'jni.h': No such file or directory
jcas_Object.cxx
..\..\inc\jcas_Object.h(1) : fatal error C1083: Cannot open include file: 'jni.h': No such file or directory
jcas.cxx
..\..\inc\jcas.hxx(1) : fatal error C1083: Cannot open include file: 'jni.h': No such file or directory
Generating Code...

Build log was saved at "file://d:\OpenCASCADE5.2\ros\win32\objd\TKjcas\BuildLog.htm"
TKjcas - 3 error(s), 0 warning(s)

Do I have to download Java Developer Kit from somewhere?
Do I have to download and install TCL from somewere?