From Keith Wedinger: It is now available as a download for MSDN Subscribers. There are 3 versions: Enterprise Architect, Enterprise Developer and Professional.
Here. Due to popular demand, we've released the source code to RegexDesigner .NET in a GotDotNet workspace. We've also posted all the "issues" that we know about (and fixed the code generation problem), so this is a good release even if you're just a RegexD user. Enjoy.
Here. It turns out that WinForms provides page and margin bounds that don't take the physical limitations of the printer into account. Part 1 talks about how to get the real page bounds, even when previewing.