You basically need to fetch feeds over HTTP, parse the XML, and display it. The network access support is in the image, to parse XML you should install "YAXO" from Squeakmap, and then build an interface, perhaps using the ToolBuilder UI framework (http:// www.squeaksource.com/ToolBuilder.html).
Is Yaxo enough to parse and/or query XML files ? Are XPath and XMLTransformer (on squeakmap too) interesting and complementary to Yaxo ?
Thanks
Cédrick