thanX CAD man. I will try to keep this post updated.
... in the mean time, I'm reading the tcw manual.
There are some facilities in tc for organizing data; blocks, symbols, groups, xrefs, and libraries. I think I may organize the project in a file directory structure. The top level will be the name of the project. As I finalize drawing sub-assemblies, their tcw files will go in the top level. Any associated files will go in a directory named after the sub-assembly. If I can keep everything localized like this it will be easier to manage and portable.
For the final render and presentation, I will use tc's facilities for sharing data between files. Not sure how that will work exactly since I am still reading.
Just to add interest for you all. I will mention that I'm running tc18 pro in win7 x64. Windoz is running under vmware on a Mac Pro desktop machine. It work very nice, I have the best of both worlds at my finger tips, anytime.