silent assertion of assembly existance on client machine

[Rea Peleg]

Hey
I need to assert from within a web page that an assembly was previously
installed (and registered) on its hosting machine.
I want to attempt to create an instance of that assembly inside a java or vb
script
method and decide according to the results whether it had been installed.

The following line of code works in javascript but generates a warning
massage
I want to avoid (regarding activeX involvement in the page...) :

var myObj = new ActiveXObject("myRegAsem.regAsemTest");

Is there a silent method I can use instead??

TIA
Rea