Single Class versus Multiple Class DLLs

Hi Everybody:

I have a large order entry type system running IIS using MTX. The COMs are
written using VB6. I wrote the system using a single class module for each
project and then compiled them as DLLs. Each class module contains between
200 and 4000 lines of code. The DLLs are then run under MTX. The system is
working fine, but I always looking to improve matters.

My question is, for an application such as the one I am running, is it better
from an MTX perspective to take the existing single class approach or wrap
all of the class modules into one DLL.

Any thoughts would be appreciated.

Thanks. Nigel