Limited or no connectivity?

[hizerd]

I just got comcast high speed internet but my computer makes up its own ip address and therefore i cant connect to the internet. The computer tech people at comcast said that I needed a new network/ethernet card so I went and bought and installed it but I still cant connect because my computer keeps making up an ip address that's different from what it should be

Do anyone know how I could fix this problem?

 

[superdave1984]

What IP does your computer have? Make sure your hardware is enabled. Check to see if it is set to automatically get an IP and DNS. CHeck DHCP client service to see if it is running. Check your CAT-5 cable.