SPSS has a file type especially which allows data created using SPSS on one system to be read by SPSS on a different system. This is called a portable file which has a filename with format *.por. Just go to file on the SPSS menu bar and save your SPSS data file as a portable file and then e-mail this file. If you receive a portable file then open SPSS (e.g. from the start menu) and open the file from within SPSS as usual.