[Zope] newbie question about aquisition

hi, consider the folowing scenario: an index_html dtml document is located in the root folder. this document includes another dtml document, includefile, with the dtml-var tag. /index_html /includefile /myfolder/includefile /myfolder/mysubfolder/ if i access the URL http://myhost/myfolder/mysubfolder, i get the index_html file from the root folder, by aquisition. the problem is that the included dtml file _also_ comes from the root. what i want is that the includefile in myfolder will override the one in the root folder. is this posible? -Tomas