If you are talking about a pre-HiperNMC then you are attempting to load the wrong file. If you are talking about a post-HiperNMC then you are using the right file. The NMC(333) generally come with 128MB RAM, most of the Pre-HiperNMCs came with 16MB or less. If your NMC has blue levers on it, then it is most likely a NMC(333). http://totalservice.commworks.com/Matrixs/tcsmatrix.cfm is a link to the Software Matrix. What software version do you currently have on the NMC? That in itself might tell you which NMC type you have. If your current version is 7.x.x or less then you have an old nmc. If it's at 8.x.x then it is a newer nmc. -- Adam Barnhill Support Engineer, TotallyFabricated.com Information Technology Engineer, Poplar Bluff Internet, Inc. / Semo.net P.O. Box 190 | Poplar Bluff, MO 63902 | 573.686.9114, <http://www.semo.net/> Home of TotallyFabricated.com the creators of Total Scrutinizer