Just installed the sitemap and it seems to be working OK.
I've added it to the Google Webmaster Tools area, but I also wanted to create a news sitemap so my articles/news items could be added to their news area. It doesnt allow you to link to the same sitemap again so I assume I have to create another one for the news/article links.
Would I be able to just upload the sitemap files into a new folder and create a different sitemap to only include the news/articles url? Would it cause any problems?