The URLS to access these feeds are:

XML - www.mycockpit.org/forums/external.php?type=xml
RSS - www.mycockpit.org/forums/external.php?type=rss
RSS 1.0 - www.mycockpit.org/forums/external.php?type=rss1
RSS 2.0 - www.mycockpit.org/forums/external.php?type=rss2