manupulating Firefox DOM objects from VB

Hi everyone,
I'm wondering if it's possible to manipulate a firefox DOM object from VB. 

For example, let's just say that I want to get the value of a textbox, or click
a button in a webpage from VB.

I know that this can be done using DOM in IE and I was able to use IAccessible
to do this for Firefox, but I want a solution that works for both browsers using
DOM.

Is there any DLL or something that I have to load before I could
"connect" to the DOM?

Any idea would be appreciated

Thanks!
       
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