I too am having the exact same problem.
I have already registered my domain at Network Solutions and changed the name servers to those of X10 hosting (ns1.x10hosting.com, and ns2.x10hosting.com). I submitted a support ticket yesterday but haven't heard back yet.
Thank you.
I have registered a domain with register.com, and I need to change the DNS so it points to my hosting account here at x10. How do I find out what my name servers are? I don't see them provided anywhere. Thank you!