[Zope] Read a file

Hi I have files stored in zope.I want before user download that file a preview of the file to be shown.So what I was thinking of is read the contents of the file and store it in another file with content-tye text/html.The problem is I dont know how to read the file stored in zodb.Any help? __________________________________ Celebrate Yahoo!'s 10th Birthday! Yahoo! Netrospective: 100 Moments of the Web http://birthday.yahoo.com/netrospective/