[Zope] autoincrementing in a folder

Does there exist any methods in Zope to keep an auto_increment id on a Folder? I have written an external method for doing this. Do people often use this idiom in zope, or am I still thinking in terms of SQL? :-) Alex Rice | alrice@swcp.com | http://www.swcp.com/~alrice Current Location: N. Rio Grande Bioregion, Southwestern USA