Windows 7 Registry Key structure

I am converting a very old (iwz) project to run under Windows 7
The app installed Ok and ran, however I found that by default the registry key information was being setup in:

HKEY_LOCAL_MACHINE
SOFTWARE
Wow6432Node
HIE
HIEAdmin

Windows registry for XP was

HKEY_LOCAL_MACHINE
SOFTWARE
HIE
HIEAdmin

An application I am to convert uses the Registry to obtain information and is expecting it in the XP structure. The organisation would prefer that the application is not changed.

Is there any way of setting up the windows 7 registry structure to be the same as XP structure.

Thanks
Jeff