Halo 2 Co-op Campaign Online?

A friend and I downloaded Xbox Connect, it works great and stuff, but we can’t play coop campaign. It says we need to be on the same xbox, is there a way around this? If it requires Mods, do we need Jtags or is it just USB or something? Please respond, Camapign was one of the main reasons we download XBC.

I believe there was never online co-op in Halo 2. That was introduced in Halo 3. My guess would be that there is no mod to get around it, although maybe googling Halo 2 online co-op mods might help steer you in the right direction.