Good morning!

I have a friend who is a first time Mac user (he's just purchased an
iBook). I have set him up with Office 2004. When he emails Word
documents they arrive for PC users as text files. These users have to
select the application to use to open the documents. 

He is using Mail and I have made sure that the setting to send
Windows-friendly attachments has been checked via Edit > Attachments. We
did a test run and here on my work PC his Word document has again
arrived as a test file.

Does anyone know whether there are other settings I can look at? I
haven't experienced this issue and have compared settings between my G4
with Mail and his settings - I'm stumped.

Thanks!