The file texsis.zip is a PKZIP file of TeXsis 2.16 with the BNL site file and a pre-made .fmt file for emTeX. It will be replaced with a more generic distribution of TeXsis 2.17 when we can get someone with a PC to make one. The file TXSpatch.tex, if it exists, contains the latest patches for the latest version of TeXsis. You should therefore copy it as well if you are copying the distribution file. For more information about installing and using TeX for 386/486/586 PC's with Microsoft Windows see ftp://penguin.phy.bnl.gov:/pub/msdos/README. - 2 February 1998