Javac -help: 'javac' not recognized...why?

hi all,
i just installed j2sdk1.4.0_02, but i have a problem. in the dos prompt, when i type C:\>javac -help, it results in a 'javac' is not recognized error. why?
my PATH enviroment variable is this:
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\ActivCard\ActivCard Gold\resources;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\j2sdk1.4.0_02\bin\javac.exe
what am i doing wrong?
thanks,
jeff

Hi, I installe dthe sdk1.4.0 but have no
C:\j2sdk1.4.0_02 dir (or anything relating to java).
Did I not do something right? I can run the java
command but not javac.If you don't have a directory similar to j2sdk1.4.0_02 then you did something wrong. You can try to search your system for javac.exe. If you post the exact steps you went through, someone here may be able to
help you.

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