I've written a simple CFML Custom Tag which provides any or all of this information about two lists: * Union * Intersection * Differerences It's called CF_Venn, for those Venn diagrams we learned in school. I'll submit it to Allaire if and when those guys fix the darn Dev Exchange. Meanwhile, just email me if you'd like it. A live demo page for my tags is now available at http://members.evolt.org/dshadovi/index.cfm (Posted to CF-Talk and CFDJList) -David ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists