Importing file that I can access from another project

Hi,
I am using VB.Net/ASP.Net 2008 and I have a solution with 3 projects:
1. DAL
2. BLL
3. MainWebProject
anyways because it's a Web Application Project (not a web project) I had to set it up so I could access the Profile using Imports System.Web.Profile in the MainWebProj but I can only access the profile in that project.
anyways I need to access the Profile in the DAL also, and I figure since I can import the Profile in my MainWebProj there must be a way to also import that into the sister project, DAL.
Has anyone done this before?
My Issue: I can import a class in Project A but not Project B.  Is there import syntax so I can also import the namespace in Proj B?
thanks

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