Its been awhile https://www.wilderssecurity.com/showthread.php?t=244086&highlight=.mso and now I have again received one of those as an attachment to an email. Some info here I don't want to install Wine. Currently on my 'main' distro viz. Ubuntu 10.04 LTS with its version of OpenOffice 3.20. No go, otherwise I wouldn't be posting this. So, can anybody advise ? Quite frankly I will be pleasantly surprised if there is a way. Renaming to .eml doesn't help.