Kolmogorov-Smirnov Z - how to calculate effect size??

Hi there,

A similar question to Laura's- how do I calculate effect sizes for the Kolmogorov-Smirnov Z? Is the Z value given by SPSS what I need, or is that the K-S Z test statistic (normally denoted as D)? Sample output from SPSS (sorry for poor formatting):

Most Extreme Differences Absolute .438
Positive .438
Negative .000
Kolmogorov-Smirnov Z 1.050
Asymp. Sig. (2-tailed) .220
Exact Sig. (2-tailed) .103
Point Probability .016

Any help much appreciated.