I used a more subtle

[sdduuuude]

I used a more subtle whole-house fan. Works slowly but well. Requires a hole in the ceiling but the gates seal the hole when the fan is not in use.

More expensive than the big old whole-house fans but not as loud.

http://www.tamtech.com/store/hv1600-whole-house-fan-r38-insulated,Product.asp

Whole-house fans should not be used at night. THey should be used in the evening to cool the house off, then shut down.

If your house is well-sealed from the attic, this will clear the attic as well. Pulls air in from the windows, up through the fan, into the attic, and out the attic vents.

If your attic is not well sealed, though, it can end up blowing attic air back into the house.