Don't quite understand what "Three other pages" Adam's post refers to in Gmail Settings but I'm assuming he means settings on the 770, not the PC.

Anyway, I've tried all the suggestions thus far and still cannot send emails,,,only receive. BTW, someone at Gmail is probably monitoring this thread as I got an unsolicited email from Gmail complete with screenshots explaining how to set up the 770 for Gmail. He sez the Username should be your complete email address including the @gmail.com part. He also has the "Use connection specific SMTP servers" box unchecked.
Neil