Juank Si que las registre excepto una que me decia que la versión que tenia era mas reciente y no la puse, por lo demas creo que lo hice todo bien, ya que segui los pasos siguientes:
MFC and ATL runtime files
This archive contains the MFC and ATL runtime files required to run MBServer
ActiveX component and the ModbuCfg.exe program. There is no a single setup file but
is not difficult to install the files.
Installing MFC dlls:
Go to Mfc directory and click the right mouse button
over Mfc42.inf and click on install menu.
Installing ATL dll:
Go to ATL directory and click the right mouse button over
Atl.inf and click on install menu.
If you have problems when registering the server try to register
ATL.dll manualy executing
regsvr32 c:\windows\system\atl.dll
Ricardo-rsaat@altavista.net