using vb6 program that has a System.Collections.ArrayList in a clean Win XP SP2 install

I've written a program in VB6 that uses System.Collections.ArrayList. The program runs fine on a PC with WinxXP SP2 and VB6 installed. On another PC with a fresh Win XP SP2 install, the program craps out with Run Time Error 429, ActiveX component can't create object. This is referring to the Syst开发者_开发知识库em.Collections.ArrayList, as confirmed by removing the System.Collections.ArrayList and the program runs fine on the PC. How do I install/register/? System.Collections.ArrayList onto this PC?

Here's a solution that may work for you: http://www.idautomation.com/kb/activex-component-cant-create-object.html