Dear Steve
The "Filesystem" option in K-PACS is used when you wish to import DICOM data from a specific directory into the local imagebox. This would be the case, for instance, when you receive a patient CD and want to import the DICOM images existing on this medium.
However, with ConQuest you will communicate via DICOM protocol. Therefore, in K-PACS you go to the "Network" tab, make sure to mark the checkbox stating your ConQuest connection, then enter your search filters in the search filter panel and then click search. If the connection between K-PACS and ConQuest works correctly, you will receive the query results in the study table. You then select which studies to retrieve by marking the little checkboxes in front of every line and then click the "Viewer" button. The data is then retrieved, registered and stored in the local imagebox.
The ports are the ones on the respective local machine, e.g. port 104 on IP xxx.xxx.x.66. If the port is blocked or already in use by another application, the K-PACS server component will not start. The same would happen with the ConQuest server. To check if a specific port is already in use, you can use the command "netstat -ano" in the command prompt. "netstat -anob" will additionally tell you which application/service uses that specific port.
To check the connection between different computers, you can either use a normal ping (this would only check the IP but not the port) or try the telnet command to include the port.