FWIW, gidget, I'm running Home Professional 7 x64, and the app didn't ask for Direct X or anything.

Also, after playing with it a little more and reading the developer's caveats, many of the super powers that make this a "Super Model..." Yah da-dah are missing from the free version. Still, if all you need is a fast viewer and all you have access to are Wafefront OBJs, "free" is the Nice Price.

If by chance anyone finds an applet called "3D Exploration" online, it's from xDimension Software ©1999 and it still works under Win 7. It's very small, loads very quickly, and can exchange 3D file formats including OBJ, the late great trueSpace, dxf, Direct X for gaming, STL Stereolith images and others.

Sadly, I couldn't find it after searching for a quarter hour, but it's worth a search, IMO. Try university ftps.

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My Best,

Gary