[Zope] inserting content of an url with a dtml tag

Hi, I'm just wondering if it's possible to insert a content of an url (within a zope site) with a dtml-var tag or something. The problem is I need to call a dtml-method (that I can properly access only calling its url with a web browser) from a dtml-document. I tried with REQUEST.resolve_url, but with no luck. Can anyone please help me? Thanks in advance, Lorty