I gathered data using the WHO STEPS instrument STEPS 1 & 2. The Epi Info files supplied on the WHO STEPS site for analysis appear sketchy or incomplete. There appears to be a complete set of *.sys files for SPSS. I do not recall *.sys files from my SPSS class. Analysis Programs Documentation supplied by WHO provides details on what the files should produce. Details are here: http://www.who.int/chp/steps/resources/database/en/