New to bitcoins and mining and need a bit of direction

[MagicBackPack]

I'm a longtime avid PC gamer and have been trying to find an easy to use/approach GPU based bitcoin miner to allow my computer to do a little bit of work in the off hours while I'm not at home, I'm running the Asus sabretooth 990fx AMD fx4100 (gonna upgrade soon) dual MSI 7770 GHZ edition GPUS, with a balanced power supply etc.  I'm trying to find a miner that can take advantage of my crossfired cards.  I tried using the bitcoin miner app located in the windows 8 app store but at 27-29mhs based off of what reading I did it was only using CPU and not very much of it at that rate as a lone 7770 should (theoretically) be getting at least above 100mhs whilst mining.  so in short need a miner that's easy to use and that can take advantage of my rig for efficiencies sake and any good mining pools would also be appreciated as I'm going through BTC Guild currently.

Thanks in advance (also I'm totally new to BTC and mining but an old hand at PC fiddling as I work in IT, so hopefully most things won't go over my head)

[andrey2345]

At this level of difficulty mining bitcoins with GPU is not too much fun, IMHO. Better try some altcoins, like LTC or NVC. If you still want to try mining BTC, consider buying a small usb ASIC device, it will be times faster than all your GPUs, will consume much less energy and let you play games and mine at the same time.