WORDPRESS HELP

We're opening up our blog so that people can submit content themselves. First they register, then they have the opportunity to create their own news story. The page is branded where they can submit content, but once they've finished and clicked submit, it takes them to the generic unbranded Wordpress page. Ideally this would take them to the home page. Also - I'm trying to embed some code into one of the columns, but when I do, the site crashes in IE7.