Feedwordpress – and nonstandard RSS tags?

I am using feedwordpress and am pulling affiliate information from a sponsor site. I LOVE this plug-in. I managed to get through the Cron Job issues with the new release and I almost have everything set up. Here is my trouble. The RSS feed that I am pulling has a ton of information. The problem is, FeedWordPress only displays information from the standard Title, Category and Discription tags. How can I get the script to read and display items from nonstandard RSS tags such as the example below? Example snippet from the RSS feed:

‘<gallery1>
http://www.Yoursite.com/opensite.aspx?SiteID=552&fld=GalleryLink&mid=867
</gallery1>’

This is my last step in this whole process and I’ve hit a brick wall.