How to modify WP RSS feed?

I wan’t to modify WP code FROM:

<?xml version="1.0" encoding="UTF-8"?><!-- generator="WordPress/2.7" -->
<rss version="0.92">
<channel>
	<title>bodieko.si</title>
	<link>https://www.bodieko.si</link>
	<description>ekologija, dom, zdravje, prehrana, okolje, energija, novice</description>
	<lastBuildDate>Wed, 03 Jun 2009 22:37:27 +0000</lastBuildDate>
	<docs>https://backend.userland.com/rss092</docs>

	<language>en</language>

		<item>
		<title>Okolju prijazna pisarna</title>
		<description>?eprav nas veliko preureja svoje domove, da bi bili okolju prijaznej?i, pa ve?ina vseeno pozabi na svojo pisarno. Za vas smo izbrskali nekaj uporabnih nasvetov ...

Uporabite tehnologijo, da prihranite na papirju:
Veliko srednjih in ve?jih podjetij se zana?a na e-po?to za vsakodnevno komunikacijo. V manj?ih podjetjih pa veliko zaposlenih vseeno na ...</description>
		<link>https://www.bodieko.si/okolju-prijazna-pisarna</link>
			</item>

TO:
`<?xml version=”1.0″ encoding=”UTF-8″?>
<rss version=”2.0″ xmlns:atom=”https://www.w3.org/2005/Atom”&gt;
<channel>
<title>Bodieko.si</title>
<link>https://www.bodieko.si/</link&gt;
<description>poroka, ekologija, dom, zdravje, prehrana, okolje, energija, novice</description>
<language>SL</language>
<copyright>Copyright 2009 BODIEKO ([email protected])</copyright>
<managingEditor>[email protected] (Bodieko portal)</managingEditor>
<lastBuildDate>Sun, 07 Jun 2009 14:22:36 +0200</lastBuildDate>
<category>Dom & Energija</category>

<image>
<url>https://www.bodieko.si/images/logo.jpg</url&gt;
<title>Bodieko.si</title>
<link>https://www.bodieko.si/</link&gt;
</image>
<item>
<title><![CDATA[Okolju prijazna pisarna ]]></title>
<link>https://www.bodieko.si/okolju-prijazna-pisarna</link&gt;
<description><![CDATA[<img src=”https://www.bodieko.si/foto/2009/06/pisarna.jpg&#8221; title=”Okolju prijazna pisarna ” alt=”Okolju prijazna pisarna ” />
?eprav nas veliko preureja svoje domove, da bi bili okolju prijaznej?i, pa ve?ina vseeno pozabi na svojo pisarno. Za vas smo izbrskali nekaj uporabnih nasvetov …
]]></description>
<author>[email protected]</author>
<guid isPermaLink=”true”>https://www.bodieko.si/okolju-prijazna-pisarna</guid&gt;
<pubDate>Fri, 05 Jun 2009 10:03:23 +0200</pubDate>
</item>

As you see the one above doesen’t even include images. I noticed that trying to add images to feed, but nothing worked, then I viewed the page source, and there is diference between the one I found on other page adn modified it as should look on mine.
Anyone knows how to change this?