Client/Server on same Win XP host - how to see the traffic


I have this client and server app that I’m currently debugging on a same host. I’d like to see the traffic between these two apps but I don’t know if wireshark is capable of viewing data that doesn’t appear to be going through the network card or, how to configure wireshark to view this data. is this possible to either configure wireshark to detect network traffic between two apps that are on the same win xp host? Or, is it possible to configure the apps to use the network card so that wireshark can see the traffic between these two apps.