Perfect - 'Prevent the browser from opening the file' was the asnwer I needed.

Thanks for your help

sure - if you post this link in most other browsers other than Firefox you will see the download link at the end of the section, but not with Firefox:

http://dl.banyanretreat.com/wl/?id=rLTBBp1E40yykodRm1gp7Xyl3dAWTSDC