I don't know why the search feature in Windows Server 2008 does not find it, but for anyone else that needs to know its:
x:\Program Files\Common Files\Microsoft Office Communications Server 2007 R2
I had to go to an XP client and map the c: drive and use the handy old Search Companion.
I'm not impressed with Microsoft's new search agent. It is quite lacking in my opinion. I later found you can select search options to search all files/folders without using indexing.
I've long lost my command line search utilities. I suppose I need to revive them.
Marked as answer byBarry AdkinsFriday, May 15, 2009 7:50 PM