I am confused about google sitemaps , can you help me out

I tried a lot of site map generators (online and bought software including coffee cups sitemap generator) and none of them could cope very well with large sites. I found A1 Site Map generator via Thomas' link in this forum - best find ever! Its fast, even for a site with +20,000 pages, easy to use and it works like a dream, plus it gives you a lot of info about your site you won't find anywhere else. Really great, thanks Thomas, I'm so glad I stumbled on this post!

Here is a link for anyone who wants to try it. They give you a 30 day trail of the full version. Once you try it you will love it! http://www.micro-sys.dk/products/sitemap-generator/