Hi Lynn,
The SAP Note 1442028 Matt Fraser identified has a good reference in it for newer Microsoft Office 2013 64/32 bit editions..
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Desktop Office Integration (DOI)
Update: Up to and including patchlevel 6 of SAP GUI for Windows 7.30 DOI did not support Office 64bit editions, only 32bit versions of Office were supported. As of patchlevel 7 of SAP GUI for Windows 7.30 DOI also supports the 64bit edition of Microsoft Office 2013.
To support the 64bit version of Microsoft Office, SAP GUI DOI is using the so-called "surrogate" approach (see below for more information). More specifically DOI is using the Windows standard surrogate called DLLHOST.EXE (the association between the surrogate DLL and the original file is done via the Windows registry). This means when you use the 32bit SAP GUI (there currently is
no 64bit SAP GUI version) and use DOI with 64bit of Microsoft Office, you will find a process DLLHOST.EXE also running in the task manager.
The RAR file you could not find in regards to my previous post on July 30, 2014 is a download from the SAP Note. See image attachment.