how much would the components cost? and what do i need?
i saw this:
http://www.ebay.com/itm/In-Hand-BITCOIN-USB-ASIC-MINER-BTC-Work-with-Raspberry-Pi-/200958265755?pt=LH_DefaultDomain_0&hash=item2eca0bc99b

is that whats needed to start or i have to upgrade my computer internals?