I got most of the staf working except the RSS comment and post when I click on the RSS the IE7 give this message (This feed contains code errors.
any suggestion?
I am talking about the once on the top right corner.
Thank you
Varkis

Are you using Feedburner? Post a URL please

No just what ever come with install,

See if it works with the "Default" theme

See if disabling plugins helps

It works for me in IE7, with permalinks on

under Appearance>Widgets I add RSS when I edit it want this information, what url should I put in?
(Error: could not find an RSS or ATOM feed at that URL.
Enter the RSS feed URL here
thank you
varkis

Now it sounds as if you mean the RSS widget, that's not the right one to publish your OWN feeds

WP Site Admin -> Appearance -> Widgets -> RSS widget
URL to put in: A RSS URL of another site, to display its feeds on your site. I.e.
http://news.google.com/news?ned=us&topic=h&output=rss
will display google news on your site

WP Site Admin -> Appearance -> Widgets -> BFA Subscribe
Feeds of your own site, for visitors to subscribe, will appear in sidebar

Atahualpa Theme Options -> RSS Settings:
Feeds of your own site, for visitors to subscribe, will appear in the header area