MSI R7970 Lightning (4 MiniDP, 2 SL-DVI) [This is going to be choice for my rig.]
ASUS 7970 Direct CUII (4 DP, 2 SL-DVI)
There is a thread for those cards right
here.
You can also use (mini)DP->VGA adapters as they are by nature, active adapters.
Be careful, where other videosignals tranfer a full 16,7 million colors, VGA only transfers 12 million colors and 'generates' the remaining colors with a process called 'dithering' if I recall correctly. Furthermore, DVI/HDMI monitors are getting cheaper by the week, VGA is already a bit outdated.