>Hi,
> I get error messages "Access violation of msjint35.dll" and "Illegal operation" during the installation of MDAC and my VB application into my client machine. What mistake does I do?
> Again, how to install DCOM into client machine if needed?

DCOM needs to be installed before the installation of MDAC_TYP.EXE on Windows 9x computers. You have it on your VB CD (named DCOM98.EXE). You simply execute it and reboot.