Dear Colleagues: A new version of OOF2, 2.0.3, is now available on the OOF2 webpage at http://www.ctcms.nist.gov/oof/oof2. The major new features in this version are periodic boundary conditions, Python 2.5 compatibility, and a new "Auto" button that creates and automatically refines a skeleton. More details are available at http://www.ctcms.nist.gov/oof/oof2/changes.html. Please let us know if you have troubles installing and running the new version. Sincerely, The OOF development team.