Hi my mom just gave me my pocket money and im thinking of buying this.

http://www.ebay.co.uk/itm/Sony-VAIO-VGN-NR38-15-4-Intel-Pentium-Dual-Core-1-86-GHz-/191060587454?pt=UK_Computing_Laptops_EH&hash=item2c7c1933be

Im going to run CPU miner, how much BTC will i make a day?