I don't believe it's possible. You'll need to return the card and find one that is compatible with the slots on your PC. That may limit your options, but you did that already by buying a Dell.
meaning buying a dell limits your freedom in nupgrading video cards etc. i have a follow up question. i understand now that there is no way i can use this card with the slot i have on my board.what if i change the slot to a x16 slot? i mean take out the pci slot only and replace with a x16 pcie slot. are the pins that you will solder are the same? please help