.ax register activeX

[video-phile]

Hello.
I have noticed that if I right-click on a .ax file in one of my pcs there is the selection "register activeX", while my other pc lacks that. In the past I found it useful as I had problems with an audio decoder. I clicked on iviaudio.ax (intervideo) and selected "register activeX" and the sound was back OK.
All I'm wondering now is when and how this "facility" was installed on my first pc...
Any ideas? Thanks

[Bjs]

Emsa_DLL_Register

and

registering or unregistering ocx, dll, ax files via right click context menu ... registry knowhow

[video-phile]

Well, unlike dll files, emsa doesn't seem capable of registering the ax ones.