C# - SQL Role Security + Custom .Net Base Page?

I'm workng on a new, green-field ASP.Net application. We're implementing a base page which all pages will be, er, based on. The application will be running under Integrate Windows Auth, so I'll have the user's account details. With these, I'll be going to several databases (in which the user will exist) to find out what roles they are assigned to in each db. I'll be holding the role yay/nay in a bool array, and key into it via an enum.

There will be a session object that will hold a few things, and the roles assigned for that user. I'm thinking of making the session object available as a property of the base page, as the code would be something like this:

public SessionObject MasterSessionObject
{
get
{[CODE]....

But, I'm sure you'll agree, it looks sucky...If there was a CheckSecurity method on the base page, it would have to take a concrete DatabaseRoles object, but also an enum of which role to check, which would also look sucky. And finally, there would be a requirement at a later date to add more databases and their security settings...

I'll add code tomorrow if required... :-s

I dunno, I'm not that thick, but I do have a hard time sometimes binding all this together...