Three files to reproduce the problem has been attached.
   1. Rt2.java     : a Java source code
   2. lha.exe      : a Windows 16-bit application
   3. kobspin2.lzh : an input file to the application above
Exact steps to recreate the problem : 
   1. Place the attached source code (Rt2.java) onto your
      x86-PC with Windows NT 4.0 operation system. 
   2. Compile it with the javac and place the resulting byte
      code (Rt2.class) into one of your CLASSPATH directory.
	command line: javac Rt2.java
                        copy Rt2.class <your-class-directory> 
   3. Place the attached file lha.exe into c:\util
      directory, and kobspin2.lzh into c:\temp directory.
   4. Run the java application Rt2.   
	command line: java Rt2
      An exception should occur with the traceback exactly the 
      same as that in my original bug report.
According to a Microsoft Win32 SDK document, error number 5 from 
the CreateProcess API means "ACCESS_DENIED"
If this description still lacks something, please contact me again.
Hisato Kato
Steel CALS Consortium
mailto://###@###.###