ActiveX component can't create object

hello !

i have iis 5 on windowsxp with sp2

i am getting some un identified error in my pc's iis .
this error is not coming in another pc with same configurations.

i have used this in my code ..
Dim oFolders
Set oFolders = Server.CreateObject "Scripting.FileSystemObject")

but some time it give me error ..

ActiveX component can't create object: 'Scripting.FileSystemObject'

or some times it tell ... ->
Invalid class string

why this comes ...
earlier these errrors are not comming ..
but suddenly this errors start comming ..

if you know this please hellp to get reomove this ..
waiting for a kind solution & reply !

thanks

This really isn't an IIS question.

The scripting runtime is installed by IE among other programs, and is available as a stand-alone download on the ms website.

Or maybe you changed some permissions somewhere, or if you changed the IIS user account maybe you've locked yourself out of the filesystem object.

There may be some way to re-register the filesystem object components on the web server, try searching google for more.

In any case, the error message "invalid class string" indicates the filesystem object isn't registered in the system registry, or the IIS user doesn't have permission to find the class in the registry.