Cannot re-register Dll's and OCX files on Vista

I am having a major problem here and hope someone can offer a solution.
A customer installed a program on her new Compaq with Vista Home Basic. The
program was designed on XP svkpk2 and vb6 runtimes and service pks. She
installed the program and it worked fine. Then she uninstalled it for some
reason, and after installing it again, the program would not run at all. All
the dependent dll's and ocx files had to be un registered and re-registered.
Up to msbind.dll we were doing fine. This one will not register, although it
does unregister correctly.
It has to be registered for the program to function. Am I missing a dll that
should install before the msbind.dll? Does anyone know of any programs that
have had this happen?

=?Utf-8?B?bWluZHNlcnZl?= <mindserve@discussions.microsoft.com> wrote in
news:8298577C-7C2C-4B2F-A1F9-8BE6E2CB6D55@microsoft.com:

It has to be registered for the program to function. Am I
> missing a dll that should install before the msbind.dll? Does anyone
> know of any programs that have had this happen?

Try using Dependency Walker from http://www.dependencywalker.com/ to see if
the DLL relies on any other file.

Make sure you do this from an elevated command prompt.

Adam