Thanks for replying Wayne and Dismounted,
Yeah, when my PC is directly connected to the modem, I can access my site & server just fine.
That's why i'm so confused about it. When I'm directly connected I can access fine, it's when i'm connected to my father's PC i cannot.
I'd love to do that, but my dad likes to "hog" the internet connection for his downloads, leaving me with the leftover bandwidth

. He won't use routers.