Question : Sitemap generators?

I am seeking a free sitemap generator that will operate for~Google, Yahoo and Bing.

I am not sure of the merits of one that is xml as oppose to a RSS feed or Ror.
Some brief background on this would be much appreciated and also your
recommendations for what I should do for
a.  convenience
b.  efficieny
Thanks

Answer : Sitemap generators?

1 - Good sitemap generator: GSite Crawler http://gsitecrawler.com/ is very good and complete, maybe some overkill and overcompication  if you are a newbie.
Simpler to understand, and producing a high quality as well, is Xenu http://home.snafu.de/tilman/xenulink.html

2 - When you have uploaded a sitemap to your site, you just need to indicate its complete url in your robots.txt file: GYM (Google, Yahoo, MIcrosoft) indexers will take note and use. see http://www.sitemaps.org/protocol.php#informing

You might additionally have some actions thru the webmasters tools of each of GYM... but again if you  are a newbie this is probably not really necessary.

3 - Using sitemaps will NOT generally make more pages of your site referenced, but they will help robots to discover them fatser.
The page http://www.sitemaps.org/protocol.php gives you the basic knowledge