File attaching propblem?

Dear friends today i got a mail from one of my friend. there he attached some exccel files. but it looks like a picture. when i tried to attach file..it shows in attachments files..not like picture.

i knw this question will not understand you..so i attaached picture of this. so plz check this attachment and let me knw...

i this a problem ? or just a why does it do that question?

That's how attachments appear when the user formats the outbound mail as Rich Text rather than HTML. Double click one of the icons and the file will open -- unless your friend is pulling your leg.