Kruskal-Wallis - How to find which ones differ?


We are doing the statistics for our bachelor thesis.

We have made a questionnaire with questions on a likert-5 scale, ordinal.

We are doing a Kruskal-Wallis test to find the differences between the questions, but we need to find out how to tell which ones differs from the others? (like Bonferroni or Tukey in an ordinary one-way ANOVA)

We learned that in some cases it is possible to do a Dunn's test to do this. But the Dunn's test is not available in SPSS version 16.

Which tests can we apply?