We have designed and installed ACR-NEMA communications capability on an IBM PC AT personal computer. Our implementation consists of an IBM PC AT bus compatible interface board with a custom device driver running under the MS DOS operating system. The interface board, which occupies one 16 bit bus slot, is capable of sending or receiving single data frames at rates in excess of the 8 MBytes/sec target specified in the standard. A full implementation (including multiple virtual channels) of all communication protocol layers from the physical layer through the session layer are operational in the driver. Sustained transmission rates between two AT computers equipped with this interface have been measured to be 750 KBytes per second for buffer-to-buffer transmission in "data acknowledge" service class. We have identified several difficulties inherent in the ACR/NEMA standard. These and the question of whether the overall philosophy of the standard optimally meets the needs of a real radiology department are discussed.