You still don't know that HFSLIP can slim down W2k the way nLite does it?
You possess a tool that can do the things nLite does with even more customatization! :

First of all you should read TommyP's instructions about creating reducing files here - they are not so difficult but when you learn them you'll get a real power in your hands to make your own Windows 2000

Let's try removing files for DTC (Distributed Transaction Coordinator) now:
dtc.rem
dtc.rin

All files are taken from DTCNTWKS.INF. I ommited one file - TXFAUX.DLL because it gives me some trouble during installation. If you feel it can be deleted please let me know about your experiance.

PS A good thread about COM, DTC and which programs need them can be found here.