well i recently got a new video card so i take my pc apart and place it in carfully, so now i got two monitor slot one from the pc originally and one from the one i brought. after that i connet my two monitor to my pc and turn on my pc.
now this is the problem when i turn on my pc only one of the monitor work and the other one is blank [black] strange thing is only the new video card work and my oringnal doesn't show any signal.

so i quickly go to diplay setting and try to extend my second monitor bu it only sow one monitor is detected.
the other problemis this video card show some lagging when i dragthe window around it teleport i think i need to install the ATI VEDIO DRIVER but duno which version i need.

hp pavillion a1000[at the back of the pc]
how in my spec it say it manufatured hp pavillion 061 strange [i install vista ultimate dell version think this is y ]