I have been following this project for quite some time now. OlyMars is a SQL Server Centric .NET Code Generator created by and made available on MSDN France. From there site:

It allows instant generation of both SQL and .NET code providing a complete library of stored procedures, .NET classes and ready-to-use Windows/Web form controls (including associated documentation).

SQL Server Centric .NET Code Generator is also fully extensible to use one's own custom templates and consequently can be adjusted to generate any custom code respecting a homogeneous implementation scheme within the company (can be written either in VB .NET or C# .NET).

Good news also is that it is free of charge and that Pascal Belaud announces a new build of the tool on his blog. The new build includes now the brand new XML Web Services 2.0 AddOn. Something I definitely have to check out one of these days.