cannot reslove names on a winnt network.

I am a linux newbie, I just installed redhat-6.2 on my laptop. I brought it in to work and am configuring ica client for citrix. When I put in the IP address of the server it says unable to browse network. Is there something I need to install to browse the network or print on an NT domain? Thanks in advance for any help
Justin Robinson
justin12@firstworld.net