If Mary Mapes is looking for a way to fill her days, HDNet's upcoming "Dan Rather Reports" seems to have plenty of job openings left to fill. According to Dan Rather's new employer, the debut of "Dan Rather Reports" is scheduled for just two months from now, in October. Yet according to HDNet's Web site, the program is currently (as of August 3) seeking multiple producers, associate producers and editors -- basically, all of the off-camera reporters and production staffers who make a big TV news show work. For the job listings page: www.hd.net. [This item by Rich Noyes was...