I got a graphic card with 2 DVI-D (Dual link),and i got 3 monitor with VGA, what should i do to make the multi monitor work?

If you don't have a VGA output either by itself or with an adapter from a "DVI-I" (not DVI-D) output then you'd need an active converter of some kind which can get expensive.

Can you post a LINK of your card, because I'm very surprised you don't have a VGA output. Please also confirm you have no other inputs on the monitors.

Very few monitors have only VGA unless they are older CRT "tube" monitors so the value of getting an active converter probably doesn't make much sense.

I doubt you'd want to game across three older monitors, so if you want to use them individually your choices are likely:

a) replace the monitors, or
b) get another, cheap card like an HD6450 to power one or two monitors (note carefully how many VGA would work at once), or
c) a combination of the above.
 
You have one (1) VGA output.... connect that to monitor #1
You have two DVI-ports.... buy two (2) DVI to VGA adapters.... then connect to monitor #2 and monitor #3 (these are cheap, few bucks each, usually get one in the box with the GPU card too...)

Now, with that card you certainly can't Game on triple monitors but can do office work. You'll have to look into the NVidia control panel to see IF / How you configure your desktop for multiple monitors once you hook 'em all up....
 


okay thanks i'll try :)