Is this a good computer?

I want to buy a new computer for gaming. I want it to be able to play everything, and I was going to customize the computer on NCIX, but everytime I do it costs a fortune because I want everything. So would this be a good computer to handle everything or is there something missing that would make it bad in the future? http://cgi.ebay.com.au/INTEL-Core-i7-2600K-GAMING-COMPUTER-PC-8GB-DDR3-GTX570-/360354818936?pt=AU_comp_dekstop&hash=item53e6d22b7