I'd ask him myself but it would be so embarrassing. Maybe someone here can explain to me why my son-in-law always signs his e-mails, "Sent from my Dell Optiplex 780, Windows XP desktop computer"? You'd think he'd be ashamed. He knows I've always had Macs. Is this a PC thing you can't get out of--like Microsoft and black plastic and PP clip art and bullet points?
If you have an idea, please use the comments to explain it to me. He doesn't like comments.