After PC refresh do: Install Numeric Python from downloads Install Scipy from downloads Install psyco from downloads Install tortoise from downloads (IT`s didnt integrate wih explorer). In settings set proxy to proxy.agso.gov.au 8080 Install swollen from latest distro (in subversion) PATH=C:\Python24;C:\MinGW\bin;C:\Program Files\swollen It is assumed that the root directory for all anuga/inundation modules is on the pythonpath, e.g. PYTHONPATH=V:\1\cit\risk_assessment_methods_project\inundation\sandpits\onielsen\anuga\inundation