1) For your HDD, you need to reformat one, go [Control Panel] -> [Adminstrative Tools] -> [Computer Management] -> [Storage].
You will find your HDD there and then you click on the long bar, right click and choose the option to format, if your are going to partition it then you will have to format to [Primary Drive] first then format again for the partition you want.

2) As far as i know, 5 slots IDE cable quite hard to find. think you take out your CD/ROM and perhaps use your Writer to read CDs bah
