deploying interop asmbly in IE

[sam]

HI

I have a COM interop assembly, which is fairly large in size
The purpose of this assembly is to work as a component in IE, so I deploy it via an html
Question : How and what is the best way to deploy it in an html <OBJECT> tag

Additionaly I would like to put it into the GAC, so I have created an msi file. The msi by itself works as expected
Question : How can I modify the html to ensure that if the proper version of the assembly doesnt exist in the GAC, it should be installed over the net from my msi

thank
Sam