770 is compatible with four monitors. You have 1080p resolution screens?
Use Displaypoert to HDMI cable. for one screen. One HDMI cable + DVI-D cable for one screen.
With this it should work http://www.amazon.com/Startech-DP2HDMI-DisplayPort-Adapter-Converter/dp/B0017K6BDW
Then just add normal HDMI and you re good to go
Monitor postion you can adjust from settings.