Is Win 7 64 or 32-bit?

>As we start to deploy Win7 laptops, users are getting an error message on the following lines of code (depending on which directory the notes.exe is in):
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CASE FILE('c:\Program Files\IBM\Lotus\Notes\notes.exe')
>RUN /N 'c:\Program Files\IBM\Lotus\Notes\notes.exe'
>CASE FILE('c:\Program Files (x86)\IBM\Lotus\Notes\notes.exe')
>RUN /N 'c:\Program Files (x86)\IBM\Lotus\Notes\notes.exe'

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>The intent is to launch Lotus Notes. It has worked fine up until now with XP. The error message is
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RUN|! command failed. The system cannot find the file specified.

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>I have done some reading and it looks like it is a problem with trying to issue a RUN command for something in the Program Files folder in Win7.
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>Advice appreaciated. All we want to do is detect if Notes is running and if not, launch it.
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>TIA