NB himself - thanks for the reply!
At the least, the "per-pixel" stuff, but I think more... as I like XP, I am just looking to use a WB skin that gives me something as close as possible to Vista Aero Glass. While not very imaginative, I don't get the impression that I am unique in this either.

Since I assume your reasons for not releasing a fully functional trial version of WB are related to a perception of it being hacked and a subsequent loss of sales, well, that is obviously your call.
But from the perspective of someone that has sold a software package on the Web for 10 years, I can say that I have certainly "been there"... and I eventually settled on a simple time-limited fully functional trial, which is where I have been for the last 9 years. In the end, you can't really stop the low-lifes that want to rip you off and are willing to put some resources into doing so. Put differently, how much resource are you willing to expend to "protect" a relatively low-cost product?
My personal view is that the majority of people who are willing to use "cracked" versions of software are NOT your market - they wouldn't have paid you anyway, and the more you attempt to chase after the fantasy of getting them to pay you, the more you end up just making life hard for your real customers... a la DRM etc.
Anyway, as I said, thanks for the reply - and best of luck with your new release!