First off, Dreamweaver even CS3, sucks at ASPNET, which is
the technology this is using.
I think Visual Studio 2003 is using ASPNET 1.1, The current
version of this technology is ASPNET 2.0, which is easier to use
What you can do is download free of charge Microsoft Visual
Web Developer from Microsoft, you'll need a few things - .NET
framework 2.0 and MS SQL Server 2005 Express to make everything
work better.
I think you'll see this as a better alerternative to
Dreamweaver and all of this is free from Microsoft.
If this were anyother technology, even traditional ASP, I
would say stick with Dreamweaver, but not with ASPNET
MS have also released something called Expression Web which
is great at ASPNET for putting front-ends on apps developed using
ASPNET