I know it is possible to upload a new file replacing the file for a certain ID because in the zope management interface this is done by editing >the FileObject with the specified ID. I read in the bugcollector that the method "updata_data" cannot be >used, instead "manage_upload" should be used. ... Can anyone provide me with a sample python script that uses (or clues how to use) manage_upload to upload this file to the correct ID?

I don't have a sample script, but some clues to help you on. First of all, learn to check and search help from the Zope Books API section and/or the help in your Zope server. These files give you some idea atleast. And then the best source for help is the source code. If you see something done in the Zope interfaces etc. you can try to look for those sources too, for some help. But now for the real help: With the form - listing all the files in the directory, you can get a good idea from the Examples that come with Zope. There is the FileLibrary example that shows you a lot. For File object, the update function is manage_edit. So in your script you will call this function for the object you want to update. Below is how it is defined in the source ( lib/python/OFS/Image.py ): def manage_edit(self, title, content_type, precondition='', filedata=None, REQUEST=None): Hope this helps. -huima