Is it possible to examine the IDL of a .XLL file?

I tried using OLE/COM Object Viewer, version 2.10.059, on

J:\Program Files\Microsoft Office\OFFICE11\Library\Analysis\ANALYS32.XLL

Result was

IMoniker::BindToObject failed on the file moniker created from ("J:\Program
Files\Microsoft Office\OFFICE11\Library\Analysis\ANALYS32.XLL"),
Unspecified error
E_FAIL ($80004005)