Looking for Chorus in x64 Sonar 8 PE

In the Cakewalk Plug-in Manager x64, I found DirectX Media Objects (DMO) which includes a Chorus. Dumb me can't find a way to patch it in. They don't show up under the Audio Plug Ins when I try to insert a plug in.

I found this...
http://www.soundonsound.com/sos/nov06/articles/sonartech_1106.htm

When you open the manager (see screen below), you'll see that the leftmost window shows various plug-in categories. Clicking on one of these shows plug-ins related to this category in the middle window. Most of these are relevant to Sonar, except for Direct X Media Objects, which may include video-orientated or proprietary plug-ins that Sonar can't use.

So, why are they listed there? It doesn't make sense to me that they are listed and not usable anywhere. This can't really be true.

Many thanks,

Geoff

PS: Sonar 8 PE x64 on Vista x64 Ultimate using a Line 6 Gear Box (GX).