How to create XML sitemap for larger website?

[DCISEO]

We need to create XML sitemap for a website that has more than 2 million pages. Please suggest me the best software to create XML sitemap for the website.

Since there are different strategies that larger websites submit sitemaps, let me know the best way to submit this sitemap for website of this size.

Or Is there any tool provided by SEOmoz for XML sitemap generation for larger websites?

[johncallaghan]

What's the website built with? Doesn't it have a module/plugin/extension for XML sitemaps?

[KarlBantleman]

Screaming Frog is quite good I seem to remember, it will crawl all your URL's then create the sitemap for you. You may need to change the "priority" of the pages but the hard work is pretty much done for you.

[DCISEO]

Our website is built with ASP and there is no plugin/extension for XML sitemaps

[DCISEO]

Thanks a lot for your suggestion.  We have successfully run 500 URI limit using trial version of this Screaming Frog software.  We will check up with the licensed version of the software.