Simply download the Zip-Archive and extract all files into your wp-content/plugins/ directory. Then go into your WordPress administration page, click on Plugins and activate it. After that you will have a new menu point called “Sitemap” under the “Options” menu. You can alter the default change frequencies, filename and other options there. Click once on “Rebuild Sitemap” to create your sitemap the first time.The script needs write access to your Blog directory. Check out the WordPress Codex or have a look at the FAQ for help.

Support:

If you have comments/problems/suggestions, see something in the code which is not compliant to the WordPress Plugin Codex, or just want to say “Yeha! It works!”, feel free to create a post at the WordPress support forum and tag it with “sitemap”. It’s likely that you’ll get an answer for your problem faster there than by writing me an email, because I get a lot of support emails and need some time to read and answer them all. If you think you’ve found a bug, please open a new ticket here.

Example of a generated sitemap:

http://www.arnebrachhold.de/sitemap.xml or http://www.arnebrachhold.de/sitemap.xml.gz

Screenshot:

Cutout of the administration UI, click for full image: