dataset to linq editor (visually create linq query - like vlinq)

Question

Hello, I am interested in creating a visual linq editor (like provided in sql server management studio). which i want to use in my application to give end user the ability to create linq queries on dataset. I tried to understand VLINQ, but i am unable to understand, how can i use it as a starting point. Can someone please guide me or point me to some code that has the capabilites of providing visual query building, i think i will then modify it for producing linq query instead of sql.

regards