Install BI Server 5.3 (Windows 7) Java Path Issue

I am brand new to Pentaho and am attempting to install Pentaho BI Server 5.3.0.0-213 on a Windows 7 64 computer.
As I saw in several instructions posted online, I set my Environment variable for my Java installation. This is what happens when I try to start the BI Server application:
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c:\Program Files\Pentaho\biserver-ce>start-pentaho.bat
DEBUG: Using JAVA_HOME
DEBUG: _PENTAHO_JAVA_HOME=C:\Program Files\Java\jdk1.7.0_21
DEBUG: _PENTAHO_JAVA=C:\Program Files\Java\jdk1.7.0_21\bin\java.exe
The system cannot find the path specified.
'startup' is not recognized as an internal or external command,
operable program or batch file.

c:\Program Files\Pentaho\biserver-ce>
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I have several installations or at least Java directories:

C:\Program Files\Java\jdk1.7.0_21
C:\Program Files\Java\jre7
C:\Program Files (x86)\Java\jre1.6.0_22
C:\Program Files (x86)\Java\jre1.7.0_11
C:\Program Files (x86)\Java\jre6
C:\Program Files (x86)\Java\jre7

I've tried setting my environment variable for each of these paths with the same result correctly referencing the defined path but with the same message that the path is not found.

Does anyone have any ideas or advice?