[Zope] Edit ZClass methods with FTP?

OK I have come along with the example and build now my own classes. I have uploaded a DTML-method into the ClassFolder in the Product area. I can't see this method if I log in with FTP. I also don't see propertysheets/ and propertysheets/methods/ , these are methods, right? Is it possible to go to the DTML in the ZClass with FTP at all? With regards, __Janko