Don't be offence, but I don't think that you will able to get any profit with your graphic card now...
ASIC is coming, ether buy it or forget about your small farm.
If you are still sure, try several pools to be sure. Choose from those pools, what take smallest fee.
while i realize that i wont 'get rich quick' but my power is free as i said, so i might as well make a small amount of BTC rather than none.