[Zope] ZCatalog results.

Im trying to make 2 searchs on one ZCatalog and merge both into a single result, but I had no success on removing the duplicated results. Has anyone did this (almost sure)? How do we filter a LazyCat? There is a way to convert it to a python list? Thanx. -- Sidnei da Silva X3ng Web Technology sidnei@x3ng.com.br