Randem Systems Support Board

Hi all,
 
I'm a new member here. I need your help for a problem with VB6 program. I have program that has only one form that capture an input and opens the right file if it is found in the directory specified. I can run that program in my pc. So, then i created setup and tried to install in my clients pc but I got an error. I installed vb in that pc and run the program, the error message was Run-Time Error 430:Class does not support Automation or does not support expected interface.
Please desperately i need help on this.  
Regards/shena