If your monitors only
support VGA connections, you can connect them both. However you will need two adapters:
The first is a VGA --> DVI adapter. Here's one for sale online:http://www.amazon.com/StarTech-DVI-Cable-Adapter-DVIVGAMF/dp/B000067SOH
The second is a VGA --> DisplayPort apapter. Here's one for sale online:http://www.newegg.com/Product/Product.aspx?Item=N82E16815158150
Note that both adapters are "passive", meaning they do not require external power. Converting to DP from either DVI or HDMI requires a more expensive adapter that requires external power.
Hope this clears up any questions you have.