Dont know if I understand what you mean
Where you said to point the variable path to where javac.exe is stored, did you mean to add the path to the list in the textbox of system variable path, which I did (seperated from the list with a semicolon)
Where you said to move to where Hello.java is stored, I presume you meant me to open cmd window and change directory to C:\Program Files\Java\MyJava, where Hello.java is stored.
If I am correct (which I dont think I am) I type in javac Hello.java as you said. The result is shown below:
Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Users\Greg>cd C:\Program Files\Java\MyJava
C:\Program Files\Java\MyJava>javac Hello.java
'javac' is not recognized as an internal or external command,
operable program or batch file.