You can send your question to one of the NetBeans mailing lists : nbusers@netbeans.org. There's no guarantee you'll get an answer there, but usually, there are a number of experienced developers and IDE users who will be glad to help you. Note that you have to be signed up to the mailing list to be able to post.
It might be a good idea to search the mailing list archive first.
Alternatively, you can browse the nbusers mailing list using www.gmane.org .
Also, you can explore NetBeans Support Resources.