|1st of all, turn off the Caps Lock. Many people will purposely NOT answer your question(s) because typing in all Caps is considered to be rude and/or shouting.|
2nd, list your complete specs, not just in general terms. You have a 1000W PSU? What's the make/model? Same goes for the video cards...there are quite a few 6 series cards. Which CPU, motherboard, RAM do you have?
3rd, SLi configurations are generally a waste of money. The 6 series is outdated. You could get one 9 series card that would slap the snot out of your 2 x 6 series setup.
4th, did you benchtest your hardware before assembly or just slap it all in the case & expect it to work?