Quote: "(no changes on graphics card from when i got the computer but it has directx 10)"
Sorry but that intergraded video card is NOT DirectX 10 at all. Only the Nvida 8XXX & 9XXX And the ATI HD 2XXX & 3XXX are the only DirectX 10 video cards out (so far). Also keep in mind that you need aleast 1 GB of Ram. Just because you ave vista, dosn't mean its directx 10.
A Dell Dimension 3000 only has PCI slots if am right. The only PCI DrectX10 Video Card is this:
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=3592044&Sku=V261-2646&SRCCODE=GOOGLEBASE&CMP=OTC-GOOGLEBASE
And its not a good DriectX10 Card anyway. But good luck on getting a new machine with driectX10.