AGS does it pretty easily.. but any decent script should let you do this:
Code:
<%DEFINE
GLOBALDUPES True
PAGEDUPES False
%>
<%TEMPLATE
NAME RSS
HTML <item><title>##Description##</title><link></link><pubDate>##Today## 12:34:57 +0000</pubDate><dc:creator>SublimeNudes.com</dc:creator><category>##Category##</category><guid isPermaLink="false">##Gallery_URL##</guid><description><![CDATA[ ##Description## ]]></description><content:encoded><![CDATA[ <center><a href="##Gallery_URL##"><img src="##Thumbnail_URL##" /></a></center><br><br>##Description## ]]></content:encoded></item>
%>
<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
<title>Sublime Nudes RSS Feed</title>
<link>http://www.sublimenudes.com</link>
<description>Beautiful Nude Art</description>
<pubDate>##Today## +0000</pubDate>
<generator>AutoGallery SQL</generator>
<language>en</language>
<%GALLERIES
HASTHUMB 1
DESCREQ True
TYPE Permanent
FORMAT Any
CATEGORY Mixed
AMOUNT 10
SPONSOR Any
HTML RSS
GLOBALDUPES True
PAGEDUPES False
ORDER (Clicks/Build_Counter) DESC
REORDER (Clicks/Build_Counter) DESC
GETNEW True
FILL False
%>
</channel>
</rss>