Please don't feel embarrassed, I will make sure that content on both abbreviations is easily found on our documentation page. I am sorry for misleading you using the term DSL, what I was actually referring to is the visual designer. DSL stands for domain specific language, and it is partly what we did with our designer. We defined a language specific to the terms of an object relational mapper, and exposed a visual designer that you can use to operate with it, which we sometimes refer as simply DSL.
DSW on the other hand, stands for the Domain Services Wizard, which is a wizard that comes with OpenAccess and can automate the generation of WCF services based the model that you have defined.
Again I would like to apologize for misleading you, I hope this clears the picture for you.
All the best,
the Telerik team
SP1 for Q3’11 of Telerik OpenAccess ORM is available for download.