I purchased one domain at www.worldtarget.com.
There are two utilities that confused me :
- Name Server Information (click here to modify)
- Domain Host Information (click here to add)

The first one is where I put in my hosting info ie. ns1.park.com and ns2.park.com
But what is the purpose of the second one ?
is it for the IP address for my hosting account ?
It says " Domain hosts are not required unless, for example, you intend to set up your own DNS. We recommend that you DO NOT use this tool unless you have a thorough understanding of this process."

I need some help here. Their support is very bad. Never response to my emails.

T.I.A

I'm not familiar with that particular registrar. But, from the information you provided, it would appear that the "Domain Host Information" is for the creation of name servers.
Maybe it's best to follow their advice of, "We recommend that you DO NOT use this tool unless you have a thorough understanding of this process."

right - I agree, the first is just the name servers you are shooting this domain to, and the second would be if you wanted to create name servers based on this domain.