Automation Interface use
 

I have a report system where I use Excel 2007 to generate reports. I move
data to excel sheet from another application through automation interface.
Everything works fine if the Excel is in same PC with the my report
application.
If I try to use Excel from another PC over network I get "Interface not
registered" error in clien side.

But if the Excel is installed to client PC too, the remote use works fine.

Is there some components that have to be installed and registered to client
PC?