Have you checked out the online FRUA community? There is still an active group that uses FRUA. Many hacks have been created to extend it, and there are many designs available for download.
Download site:
http://frua.dns2go.com
Good web site:
http://members.aol.com/autery/index.html
Dungeon Craft was modeled after FRUA. Being familiar with it will help you understand DC. We are working on the magic/spells right now and hope to have that working soon. There is one complete design available, and one being beta tested right now.
I hope you enjoy using DC. Let us know if you need it to do anything that is not yet available.
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CocoaSpud
Dungeon Craft Development Team
http://uaf.sourceforge.net