The find command doesn't work for me either. I'm using Word 2007 with Vista Business. Whether I do CTRL-F or go through the ribbon menu, it says it cannot find what I am looking for (and I confirmed that the word did exist in the document). I did several searches for words that I know were in the document and Word 2007 could not find any of them.
So I closed Word 2007, opened up Task Manager and closed Winword.exe and then restarted Word 2007 again. I opened the same document I was just trying to search and now when I do the find command, it works like it is supposed to.
Although this temporarily fixed the problem, my issue here is this doesn't make the find command very reliable if it ceases to work once in a while.
Is there any known fix for this?