To get around Twitter's crossdomain policy, simply use a PHP proxy on your server. For example, take a look at the end of my Twitter/Flex tutorial, there's a PHP code sample for a very simplistic proxy script:
http://blog.log2e.com/2008/05/25/twitter-flex-and-json/ If you want to implement more than just Twitter's public timeline you should take a look at the "twitter.zip" file on this site: http://youxylo.com/projects/twitter/ The zip archive contains a modified TwitterScript API plus a better, curl-based PHP proxy. Stefan

