I thought this was going to be simple but having read numerous postings on the mailing list and all related HOW-TOs I can find, I think I can confirm I am stuck. This is sad because I've just spent a very productive couple of days with Zope and MySQL making the world a better place. I have a table for chickens. Basically it looks like this CREATE TABLE T_CHICKEN ( ID INT NOT NULL PRIMARY KEY AUTO_INCREMENT, CODE CHAR(10) NOT NULL, DESCRIPTION CHAR(40) NOT NULL, NOOFLEGS INT NOT NULL DEFAULT 2, TYPEID INT NOT NULL ); And another table for types. CREATE TABLE T_TYPE ( ID INT NOT NULL PRIMARY KEY AUTO_INCREMENT, CODE CAR(10) ); Each chicken has a type associated with it. At the end of the day I want to display the chickens underneath the type it has ... start the screen up it would say + BIG + MEDIUM + SMALL And the users can then expand to see the chickens available in each category. + BIG - Flossie - Wombat - Hank + MEDIUM - Debbie - Fruitbat - Harold + SMALL - Bob It would appear that I need to feed two things to the dtml-tree tag. Firstly my starting levels (my types) and then the related data underneath but I can only feed one SQL query to the tag. All the stuff I read seems to assume the info at the top level comes from the same file (and from a key id). How do I do this or indeed, is it possible? I have a nasty feeling I am missing something obvious. Ian