How do I get events from another windows?

[Andrey Moura]

<a href="https://www.google.com/" target="_blank">Click me</a>

When the user clicks in "Click Me", it opens a new window. It's perfect, but I would like to access the new browser (for executing scripts and listening to events). How do I do that? Should I create a ILifeSpanHandler? Can someone post a sample? (The samples in internet are out of date)

[Andrey Moura]

I'm using Windows Forms! I forgot to say!