Try http://www.erik-senst.de/literaturlistenpruefer/ (The site is in German but it’s pretty self-explanatory.)
You can paste your bibliography and export it to zotero or Citavi (http://www.citavi.com/). If needed, you can easily transfer it from there to EndNote.
Hope this helps.
Message Edited by lbauer on 07-01-2008 06:37 PM