Is there something about your workflow that requrires printing to postscript? The generic advice on these forums is to use Export PDF instead.
If you can tell us what you expected, and what you got instead, we might be able to help you out. If you're printing PS from a print preset, it seems like a good idea to open up CS3 and look at what was in your old print presets to see if it is possible to recreate those presets in CS6.
The better question is why do you want to? That’s a completely archaic workflow.