Anywhere to use the cd key to download the game?

[DraconicFire98]

i always get confused between disk and disc :/ yes its disc the way i know that my computer doesnt want to use a disc drive is because i keep getting the redundancy check error thingy with a usb drive and before you ask me to get an internal drive... it wont fit... im on a netbook, well not exactly a netbook since those cant do anything. what does the Alienware m11xr1 classify under? netbook or laptop?