well, I just put your feed into WordPress's standard RSS widget, and this is the error
RSS Error: A feed could not be found at http://www.mydesert.com/apps/pbcs.dll/section?category=RSS06&template=rss_gd_re. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.
In the next update, I'll have an option to use force_feed, but until then the feed is causing problems both with my plugin and that of wordpress. My suggestion is to use another plugin if you find one that works with this feed.