Sebastian, I have looked at the source from your homepage and have re-reviewed the biopython and wxPython docs (for my own benefit). I am concerned, though, that the version of the source I have is awfully outdated. (I think it's the very first prototype from 2002) Is there anyway I could get a newer version of the source. Also, with regards to CVS, couldn't we use an FTP server and just, after finishing a programming session, upload a files that we are working on, creating directories as we go to preserve the different working versions? Tell me what you think. Michael