no thats the seek time in milli-seconds - lower the better obviously

you shouldn't need any cables, most computers are already kitted out to put another hdd in. all you need is an IDE cable and a power cable.

power cable will deffo be in there and so should ide. if it isn't then i can send you one foc anyway if im wrong

btw. how many cd drives do you have? if you've got a few then you might have run out of IDE ports - unlikely though most have room for 4 devices (cd and harddrive - floppy disk not included)