 internal HD cheapest
INternal hard drives are cheapest and are basically a piece of piss to install. You can get 120Gb (7200rpm)for about £70 or less from Dabs.com. If your motherboard supports SATI then you can have a very fast drive with over 200gb of storage. The external drives should be firewire, USB is too slow, They are more expensive cos of the dedicated power supply in them.
If you have "windaes twa thoosand" or XP then the drives are automatically recognised when you reboot, you just use a utility to format the drive then Bobs yer whatsname.
Good luck
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