Haha, 1024 byte = 1 kb, 1024 kb = 1 mb, 1024 mb = 1 gb, etc...
Man, I have a 200 gb hdd, and i've barely managed to use half of it... but there is one thing that is kinda cool about bigger hard drives these days..
game devs no longer have to worry about how big thier games get in terms of hard drive space... i'm pretty sure that was a big issue back when games back in the mid-90s were made.