What utility can export registry?

Your question is confusing, as you speak of the registry, but your question is posted to the NetWare forum. So, I will speak to both the NT registry, and NDS.

There are lots of cool registry tools in the NT Resource Kit. I think REGEDT32 will allow you to export hives or keys within the NT registry. Some more info on some of the registry tools in the reskit, point your browser to the following MS knowledgebase article:

Q171591

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With respect to NDS, there is a utility called uexport that should allow you to export the user object database to a text file. I do not know if it is CSV formatted.

Good luck!