Hi, for a number of reasons, I need the following: 1)Create instances of a ZClass, say MyClass, on a specific folder that is passaded as a parameter. 2)I have a Catalog that indexes DTMLDocuments placed on a (something) big hierarchy of folders. Besides that, some "higher" folders (not all) has two strings properties that I need to use to search those DTMLDocuments. I need something like "Search all DTMLDocuments that have <string parameters> on its content and are in <folder-property1> and <folder-property2>". The use of those folder properties is optional, I mean, you can use none, one or both properties to search. If you use none, you are going to search on the whole hierarchy of folders, otherwise, the search aplies to only part of it. You can see that what I need is to give the DTMLDocs two properties that they obtain from the folders they are placed in. What can I do? Use aquisition? Define a DTMLMethod in each "higher" folder that can return its DTMLDocs? How can I combine this kind of solution with ZCatalog searches? Regards, Rogerio Atem