My DAL is ALWAYS LLBLGen Pro and this project would be my LLBLGen DAL or LINQ.

LLBLGen Pro is an enterprise DAL creator and is in NO way similar to low-end 
tools like NNHibernate and the other 10,000 DAL creators and code generators 
that every bored programmer felt like writing in their garage.  LLBLGen Pro 
is a very power utility that completely abstracts ALL database functionality 
from the developer.  All you have to do is point it as a database and BAM, 
done.

Comparing LLBLGen Pro to something like NHibernate is like comparing the 
.NET Framework to the PHP function list or comparing Firefox to IE or 
comparing SQL Server 2005 to MySQL.  In reality, It's actually MUCH more 
like Microsoft LINQ than a DAL generator, but is of course much more 
established and had have many more capabilities.

For more information on LLBLGen you can watch my video at the following 
link:
  http://www.netfxharmonics.com/2006/03/LLBLGen-Overview-Special-Edition-Video.aspx