Forcing Internet Explorer to unload an ActiveX OCX

[Alon Diamant]

Hey,

I apologize in advance if this is not the correct newsgroup to ask
this question in.

I have an in-proc ActiveX control I developed myself. It does not use
the standard .CAB based deployment strategy, rather - I have my own
setup program, and my own version checking via a website.

Now, imagine the following:

1. User enters the website with an old ActiveX, which is loaded.
2. Website has JavaScript that loads the ActiveX, tells the user that
it is old and moves him to a different page with a download link for a
new setup program that contains the new ActiveX.
3. User runs the setup program, but cannot upgrade the ActiveX - the
OCX is locked by Internet Explorer.

Note that during step 3 there is NO webpage which uses the ActiveX -
the download page has no JavaScript at all, in fact.

Does anyone have any tips as to what I can do in such a situation?
Or, better yet, does anyone know how to force Internet Explorer to
unload an OCX?

Thank you!