Your system should handle DOTA 2 if that is what your asking. Or if you want to know how to setup dota 2?
http://store.steampowered.com/app/570/Make a steam account and you have to buy the game with credit card or pay pal. Also if your lucky there is allot of free giveaways keys for DOTA 2 ( I don't know if they are still available).
Case: Antec 300 Mini Tower Motherboard: GA-Z68A-D3H-B3 (rev1.3) CPU: i5 2500k @ 4.5ghz Cooler: Hyper 212 EVO GPU: GIGABYTE GTX 560ti (950mhz) RAM: G.Skill 8 GB DDR3 @ 1600mhz PSU: Corsair CX 750 Driver: 320.00Been building PC's for 8 Years! 😉