Scripting.FileSystemObject

Set FSO = CreateObject("Scripting.FileSystemObject")

I know this object belong to scrrun.dll but how can I find out what dll it belongs to if I run into a case like this?

Thanks

Open up your registry.
Open up the HKEY_CLASSES_ROOT section and scroll down to the item in question (Scripting.FileSystemOject in this case).

Note the Class ID.

Scroll down to the class ID's and find that class ID (I usually just do a search for it)

Find what dll is listed.

Actually, I did a value search on Scripting.FileSystemObject in the registry and it came out with the class id right away. That eliminate going to the key.

Thanks for your help.

Any time.