Merging Of Com Interop Assemblies into Single Assembly (single dll)

Question

Hi ,
We have different activex dll , we create interop for every activex Control (developed in vb 6.0).
We used com interopility tool provided by dot net framework , the tool creates two dll for each acivex control. We have more than 50 AciveX Controls so for 50 Activex it creates 100 dll files.
It is difficult to maitain all files.
The Problem :- 
I want to merge all dll files whcih are created into single dll. Tell me whether it is possible to  merge all wrapper dll into single assembly if yes then how i will do this and how to use .

Give me the solution as early as possible. 
I required it urgently.   

Regards,
Vighnesh Ambekar