Thank you for your enquiry about obtaining our UNIMOL suite by email. That can be done using FTP. To run the program suite, you will also need the manual, which is some 30 pages in length. This manual can also be sent to you electronically, most easily as a Macintosh binhex file which can then be printed out. Note also that the program and manual make frequent reference to our text, "Theory of unimolecular and recombination reactions". R.G. Gilbert and S.C. Smith. Blackwell Scientific Publications, Oxford and Cambridge Mass., 1990. Users have found having access to this text makes the program much easier to understand. To access UNIMOL programs and sample data files: ftp to ftp.chem.usyd.edu.au as ftp or anonymous Change Directory to /pub/unimol copy all of the files in this directory. This contains the program file. The subdirectory doc contains the documentation, both as a Macintosh BinHex file or as an RTF ("rich-text format") file which can be read into any word processor. These are available as manual.hqx and manual.rtf For further details, email gilbert@chem.usyd.edu.au Robert G Gilbert Professor Robert G Gilbert Sydney University Polymer centre Chemistry School, Sydney University. NSW 2006 Australia phone: 61-2-351 3366. fax: 61-2-351 3329