Yes. However, the text that gets converted loses any headings that were originally applied. This means that your key phrases lose any prominence they may have had. Presumably DF is Digital Fire?
Yes they can. Google is even working towards indexing flash files. These documents can be indexed Yahoo & MSN .html .htm HTML files .xls excel spreadsheet .pdf Portable Document Format .ppt Microsoft Power Point .doc Microsoft Word .xml XML/RSS files .txt Text files Google indexes all those and: .ps Postscript files (printer language) .dwf Autodesk .kml Google Earth .kmz Google Earth .rtf Rich Text .swf Flash