I found IQ-DICOMTest today. Its a nice util for testing dicom associations, etc.
"iQ-DICOMTEST represents a set of tools for the purpose of testing and troubleshooting DICOM communications." Image Information Systems Ltd.You can get your copy of this software from the Image information systems website. You will have to create an account on thier forum (But I am sure you already have if you have downloaded K-PACS).
Click here to get your copy of IQ-DICOMTest.