Upgraded Ram and now no CD or DVD drive

HELP! I cannot play my flight sim now.
I just upgraded tha Ram on my computer, bought the correct compatible RAM board, an additional 512 mb. Slid it into the Dimm slot, reconnected everything on my PC, turned it on, and now my DVD-RW and CD-RW drives are not functioning.
The computer recognises the new ram upgrade but now no more CD or DVD.
Should I have reversed the boards. Put the old ones in the new slot and the new board in the first slot? Im at a loss and not exactly computer literate at all times.
Thanks,
Stephen
I just upgraded tha Ram on my computer, bought the correct compatible RAM board, an additional 512 mb. Slid it into the Dimm slot, reconnected everything on my PC, turned it on, and now my DVD-RW and CD-RW drives are not functioning.
The computer recognises the new ram upgrade but now no more CD or DVD.
Should I have reversed the boards. Put the old ones in the new slot and the new board in the first slot? Im at a loss and not exactly computer literate at all times.
Thanks,
Stephen