If you end up with just a .dll file then you need to put it in your VST plugins Folder.....
I have a couple on my system one in Programs\Steinberg\Vstplugins, and there is also one that Sonar made in something like Programs\Sonar\Plugins or similar
Depends which version of Sonar you have as how you get Sonar to recognize them, it used to be a seperate program but now it's built in and should do it automatically, but you can run it from the Tools/Plugin Manager Menu...you can also specify where Sonar looks for plugins in there too.
Hope that helps.
CD
We never finish a mix... we simply abandon them.
You can't polish a turd, but you can always spray paint it GOLD
Great songs are not written, they are re-witten