What I wrote was a short Ruby plugin for SketchUp. It writes out basic model information to a text file, allowing it to be imported again (as a notecard) into Second Life. From there, an object parses the notecard and re-generates the model in-world. It does not support the full power of SketchUp by any means, and takes some judicious short-cuts to avoid generating zillions of prims. In erring very heavily on the side of simplicity, I’ve made something that you’ll either find delightful or frustrating. LINK to the storry.