There are numerous regression packages not directly linked to this book for which the data files set up in ASCII (that is, text) format would be appropriate. If you plan to use the book's data sets with one of these other programs, and have the CD that came with the book, unzip the file using WinZip or PKUnzip to get all the data files that contain just the numerical values of the data as the ASCII text file DATAX-Y, without a suffix. There is a corresponding header file DATAX-Y.HDR that contains the variable names, data sources, and units of measurement (also described in Appendix D). Move these files to the appropriate directory for loading with your regression program. If you don't have the CD, you can download from the internet and then unzip it.