I suspect that node can be HTML, or HTML-like? In which case, you need to parse that text as HTML so you can manipulate it... It would help if you supplied more context, i.e. some XML which indicates what nodes of the RSS specification you are referring to exactly...
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p CodeProject MVP for 2010 - who'd'a thunk it!