Attached Link: http://www.pixologic.com/zbrush/downloadcenter/alpha/

I don't know what programs you have access to but if you can get your hands on a sculpting application that can export a normal map or bump/displacement map, you may be better served at sculpting the details yourself I think.  As people have stated, the moire pattern is hard to avoid at finer settings - Baggins Bill may have a way around it, so you could also ask him for advice.