I think that is a newer computer, right? If it is the one im thinking about it should be able to support the newer video cards witch usually plug into a PCI express slot, so your Pc should definitely have one or more of those. So really the process of upgrading is really simple, you just find the card you want say at
i have an E310, and really like it. I have added (2) BFG NVIDIA GeForce 6200 256mb cards and run 5 monitors off of it with no prob. The thing you need to watch out for is you have to get a PCI and not a PCI-e x16. Your E310 doesnt have a slot for the X16