The CSIRO Biometrics Unit (IPPP) has been developing a Windows-based software product for power and sample-size calculations. The software also incorporates electronic statistical tables for common discrete and continuous distributions. A beta release of POWER PLANT is available via anonymous ftp from: : Anonymous ftp: ftp.per.its.csiro.au : Directory: /csiro-wa/biometrics which contains the two files: README - information on downloading/installation PRPLANT.EXE - Self-extracting Installation program. Furthermore, a self-extracting archive (MANUAL.EXE) is produced after installation. Running this executable will produce a Microsoft Word document MANUAL.DOC which is an abridged version of the PowerPlant documentation. All correspondence relating to Power Plant should be directed to: biometrics@ccmar.csiro.au We will happily attend to bugs and welcome feedback on functionality, ease of use etc. However, we will not provide support and assistance with the use of the software and interpretation of its output. Please note, that the software is being released as "freeware". Potential users should be aware of the disclaimers issued with the software and must agree to the terms and conditions which are displayed prior to installation. February 1996