GCJ Help

[Me Myself and I]

I'm having trouble getting
 
gcc-java-4.6.2.tar
 
working under windows 7 mingw32. I have read the instructions with that download,
and find that key scripts just don't want to work.  I have also become aware
of the instructions at
 
http://rmathew.com/articles/gcj/bldgcj.html
 
which is too Linux, and GCC oriented (not GCJ).
 
 
-Is there a simple set of commands I can use to get my compiler download
built and working?
 
Can someone please help?
 
 
And by the way, is there an auto download and installer for MINGW64,
the way that
 
mingw-get-inst-20110530.exe
 
works for MINGW32?  Does use of the MINGW64 environment give one the choice
to compile 32 bit and 64 bit executables, with the GCC and the GCJ?