Thanks all for the great suggestions. This group is wonderfully helpful. I tried the quick route, setting MIME type to "application/octet-stream," and that works fine for xl spreadsheets, but I still get the same behavior as before with MS Project files (browser IE 5.00.3105.0106, which is one of the IE versions we have to support). I will need a bit more time to try some of the other more involved ideas , so that won't be for a few more days.
/dennis --------------------------------------------------------------------------- Office phone: 817-762-8304 --------------------------------------------------------------------------- "Great leaders never tell people how to do their jobs. Great leaders tell people what to do and establish a framework within which it must be done. Then they let people on the front lines, who know best, figure out how to get it done." ~ General H. Norman Schwarzkopf