iPhoto attachments via email
I'm new to iPhoto and tried to "share" some photos (as attachments) with friends, and only those on apple computers were able to receive the attachment and download the file. Those on Windows computers could not? This strikes me as unbelievable that the iphoto email option would not be "cross-platform"! Am I doing something wrong and missed an option or feature, or is this the way iPhoto it works? Also, would the share feature in "Aperture" work any differently? Thanks very much for any assistance!