Yesterday I have set up guiminer on my gamer pc. Have been experimenting with the different miners and parameters to try and fiend the best result.
Tried solo and pool mining and is running for about 14 hours now!

It contains:

Gigabyte P55A-UD3
Intel i7 860
Sapphire reference HD 5870
4GB OCZ DDR3 1333mhz 7-7-7-20
Corsair H50 water cooling
Powered by Antec TruePower TP-650

Maybe in the future i will add another 5870!

Hope i will be able to discuss with the people here on this huge "community" forum.