I have 64 bit SAS 9.4 installed and 32 bit Office 2007. When I had 32 bit SAS 9.3 installed, I was able to use a libname statement where the Excel file was the library and
With SAS 9.4 or later 9.3 updates, you have another option: dbms=XLSX or dbms=XLS, both of which work regardless of bitness of office (As they're not using the JET engine or ACE engine). Still requre ACCESS to PC FILES, but they should work in mixed bitness systems.