AutoCAD 2010 has really amped up AutoCAD's 3D modeling abilities. There are several new gizmos, tools, and abilities. You can create meshes, creases, and well so much more.
With all of the new features it may be difficult to get a hold on them. Well there is a new blog from Autodesk. It is called "What a Mesh." What a Mesh is managed by Guillermo Melantoni, an AutoCAD Project Manager. His work with AutoCAD mainly focuses on the 3D aspects, and he is an architect. His blog focuses on using the 3D tools in AutoCAD, and he is quite good at it. The image of the towers on the AutoCAD 2010 box was made in AutoCAD (bet you didn't think AutoCAD could do that did ya?) by Guillermo.
Check out his blog, see what AutoCAD 2010 can offer. Oh, if you'd rather, What a Mesh has a Spanish version too!