Obviously, once you got mining going now is the time for overclocking and fine-tuning.
Read those to get yourself up to speed:GUI Miner threadHardware subforum
When in doubt, use the Search function && RTFM.
Once you get familiarized with mining I suggest you switch to cgminer which is the most advanced miner currently available.CGminer thread
If your machine is going to be used as a dedicated mining rig:
(1) Never use crossfire
. Make sure the crossfire connector is removed.
(2) Don't overclock that CPU. You aren't going to need it. You might also opt to disable half of the cores - that will increase your power efficiency.
(3) There's no good explanation to stick with Windows.