Greetings,
The IP address that is needed for the PCI-7041 RT is the IP address of the computer in which it is installed. When you are accessing it from a remote computer, you will need to determine the proper port to use for communication. After specifying the proper port, the RTProxy on that PC will translate the data to the shared memory of the 7041. Please take a look at the following KnowledgeBase which explains how to access the assigned ports to use when communication with the device:
http://digital.ni.com/public.nsf/websearch/EACC6BAC07802E5486256D2B007A27B8?OpenDocument
Hope this helps,
Regards,
Patrick R.