i don't have a network adapter, I use cable! thats the weird part! I'm really confused and annoyed
You need some sort of network adaptor to connect to the internet
You can have an ethernet (wired) network adaptor or a wireless network adaptor (wifi). You obviously have an ethernet one.
If you plugged the cable into the ethernet connector on your motherboard, you're using the motherboard's integrated network adaptor. So get the driver's from the install disk or manufacturer's website as I said above.