lwestj 0 Newbie Poster

I'm working on a n-tier solution with VB.Net 2008. In this solution I have 3 projects started (the UI, BLL and DAL). I have the BLL referenced in the UI and the DAL referenced in the BLL. What I cannot do is use a User class in the BLL in my login form that's in the UI? Any help would be greatly appreciated!