How to enable SLI?

[hagatha]

Just got my second 8800 GTX!!! I've got it mounted and everything is ok so far. I went to the nVIDIA Control Panel, 3D setting, and checked "enable SLI"... I've rebooted and the settings remained the same... Is there anything else? Seems too easy!!!

Other than 3dmark and Aquamark are there any tests that I could run to make sure everything is working the way it should?

Thanks
Lee

[blue60007]

Do the 3dmark and Aquamark scores seem right for two of them?