Dear All If we are going to use attachments on the list, perhaps there should be ground rules ! Helen quite correctly remembered that I had posted PowerPoint format X-ray images (twice) in the past,, mainly as an experiment. The file size was 100K or less, and should not have caused anyone difficulty with bandwidth or server space. The postings brought one or two compliments but no flamers, but I confess that I too get irritated by gobbledegook which my software is incapable of reading (as much because I am missing out as anything else !!). Because many list members have lower versions of Windows and Word/PowerPoint etc, perhaps there should be some guidance from John regarding format and maximum size of attachments ? An academic list should have the capability of handling attachments, so I disagree with a total ban. After all, we aren't just a chat line.................... !! ;-) Rob Cocks HK %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%