Engagement announcements

Can someone tell me exactly what you would write on your announcement?

What newspapers are doing engagement announcements?

I've seen them in Newsday and several local papers. I just sent my engagement announcements out. They were also invites to my engagement party. I killed two birds with one stone. If your parents are hosting the wedding it would go,
Mr and Mrs. Steven John Smith
wish to announce the engagement of their daughter Sarah Anne to Mark James Green, son of Mr and Mrs. Joseph Robert Green. A March wedding for 2007 is being arranged.
Or if you two are hosting the wedding yourselves you could do
Sarah Anne Smith and Mark James Green wish to announce their engagement. A May wedding of 2006 is being arranged.