Mucman has a point, but VeriSign recently took away a lot of the functionality of the whois database. For instance, at work we have an DNS server [209.12.9.10]. Using the WHOIS utility provided by network solutions, we used to be able to query for "HOST 209.12.9.10" and it would return all the info about our DNS server, including the DNS server's NIC handle [ours was something like HPI-NS6535], but that is no longer the case -- can't query the whois db to find out what a host's/server's handle is.
Your best bet is to try and contact Network Solutions directly @ 1-888-642-9675, or try submitting the form without a handle.
I hate VeriSign/Network Solutions.
randal