How to merge multiple Visual Studio.NET projects into one project

[Seshadri]

Dear All,
My apologies if this is not the correct forum. Please redirect. I am a
bit confused on where this kind of a question belongs. However I need help
rather badly. I would like to merge two ASP.NET c# projects into one project.
I am unable to information on going about doing it. I remember seeing a
Microsoft support KB article many months back and can't seem to find it now.
Any help appreciated.

To give a brief of what I am trying to do:
We are developing a customer support forum with security authorisation based
access. We are having two KB ASP.NET applications written in c#. We would
like to have two instances of these KB applications running as a single
application(sharing sessions for authorisations) and with a aingle
authentication, under another single CRM(asp.net/c#) application managing
authentication for all three of them.

I did try to do the following:
-- Remove Gloabal.asax
-- Web Config
-- Take a child node in IIS as a non-application.

It doesnt seem to work. Even when I try to give them unique identities by
using different name spaces and etc, oneKB seems to load the default.aspx of
the other leading me to believe that my integration of the three projects is
not correct.
The structure would be
---------
One single
Application
---------
CRM |
|-- KB-1|
|-- KB-2|
--------|

Any help is appreciated. If anyone also knows the support KB link from the
Microsoft support website, that explains this and can share , it is very much
appreciated.

- Seshadri.