The only way to do this natively is to use thunderbolt.
Apple has a Thunderbolt to DVI converter but that will only allow for one monitor.
The only way to do this is to buy this dock: http://www.caldigit.com/thunderboltstation/
and then run one display off HDMI and one off of a thunderbolt --> dvi connector.
There are usb ---> DVI / VGA converters that will work but they will only be rendered in software so they will be slower. (Ie. fine for static images but not good for video etc.)