(x86) is 32-bit.
'under Program Files (x86) to be 64 bit'
-> um, what?
on a x64 windows install, normally 'Program Files (x86)' is the 32-bit program install location, 'Program Files' is the x64. however you can install things wherever you want. I would look at the arch of java installed w/ the gui - should be in <install>\BladeLogic\NSH\jre - 'java -version' should tell you.