It appears to be a high-end graphics workstation. It's just a standard PC that will run any standard PC OS, but is supposed to have exceptional high end components, such as video cards, motherboards, processors, etc. I've heard of Intergraph as producing CAD workstations, but I've never actually seen one. A Google search reveals your machine has Dual Pentium Pro 200 MHz processors; that should be fun to play with! Windows NT 4 and 2000 have pretty decent native dual processor support. If you have a PC version of Photoshop, it might be interesting to benchmark.