cannot add Windows vista Business computer to domain

I am unable to add the company's new computer to the domain. I attempt to use
the netwrok ID wizard, however, i continue to get an error after the 3rd
screen. The error is:

"your computer could not be joined to the domain because the following error
has occurred:

An attampt to resolve the DNS name of a DC in the domain being joined has
failed. Please verify this client is configured to reach a DNS server that
can resolve DNS names in the target domain."

Any help or advisement would be highly appreciated