This worked for me under 1.5
weblog title: (name of your site)
weblog url: (url of your site)
weblog id: (leave blank)
username: (leave blank)
password: (leave blank)
server: (yourblog.com/feed/rss)
weblog type: (RSS)
enabled (check)
hide this blog (uncheck)
email setting (set to your liking)
