You can add the VBScriptControl as a Component or as a Reference to your program: Go to the Projects menu and select e.g. References, then add MS Script Control.
When done you can declare and set a variable as your scriptcontrol:
Dim objSC as ScriptControl
Set objSC = New ScriptControl
From here on, you're an your own to perform whatever scripting function you like.
-----
The MS documentation on this control is rather trivial. For a more comprehensive source, I recommend you:
VBScript Programmer's Reference
Susanne Clarck, Antonio de Donatis, et. al.
WROX Press Inc.
ISBN: 1-861-00271-8