Server 2003/DNS

Hi Guys,
i will briefly explain my set up in my home.
I have 2003 Server(SYSA) & i have a Main Domain innovation.com with an ip address 192.168.XX.X with 2 NIC.One NIC is directly dedicated to the Lan port of the BSNL Router WA1003A with a internet connection and another is cabled with a different system ( SYSB) SYSB has an ip address of 192.168.XX.X and i am not able to ping the domain innovation.com from SYSB and also cannot resolve the DNS from either DNS server nor the different system SYSB.

How do i resolve the DNS using the command prompt?

Please help.

Girish