Dear Jonathan, Hi again. Thanks for the advice the problem is that I have some old spreadsheet documents stored in SO's format that I need to look at. AFAIK there isn't any other software that can import .sdc files. However not to worry - I am in the middle of downloading SO for Windows (guess I'll have finished it by tomorrow) as a temporary measure so that I can open the files and convert them to another format. Bye, Jethro