capturing traffic question

Hello all,
I'm using .NET 3.5 and VS 2008 and I've been working with a WebBrowser object in my application and I'm trying to capture all incoming network traffic it generates in a byte array. Is this feasible to do using hooks or some other method of which I'm unaware? The packets should be delivered to my application anyway, so it seems like it's a matter of capturing them from within the program but I'm at a total loss as to how. Any ideas would be much appreciated.

Thanks for your help,
Richard