Russell,
I understand what you are saying about a one man shop. I would still setup PDM Works and use if I were the only one using it. There are several advantages, the biggest advantage is that you can pick any revision of any drawing with any date in time and print it as built. You know that revision is the same print as the revision from 7 years ago.
As for people copying the part / drawing and changing stuff like the finish but not the part number is a different issue all together. That is a big problem.
Bradley
SolidWorks Premim 2007 x64 SP3.1
PDM Works, Intel(R) Pentium(R) D CPU
3.00 GHz, 4 GB RAM, Virtual memory 12577 MB, nVidia 3400