The subject pretty much says it all. I've been reading "From Whirlwind to MITRE: The R&D Story of the SAGE Air Defense Computer", which is very similar in feel to "The Rocket Team" (the story of the V2). I was thinking that it would be really cool to have a complete 3D model of the SAGE that you could move through DOOM style. You'd start with coarse texture-mapped approximations until you could model things in more detail. Maybe there are some models already out there? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>