Hello,
You'll really want to get the $30 one from Newegg (Dual Layer IDE burner) like below. It will work fine and match your case.
Link:
http://www.newegg.com/Product/Produc...82E16827106226
While you're at it, if you have less than 1GB RAM, get 4 512MB DDR RAM chips. You'll be much better off for it. They are here for:
http://www.18004memory.com/focuscfg....26925&mfgID=31
$25.00 each for the name brand (which is well worth it considering Dells don't like the non-name brand stuff).
Considering that a total bill of approx. $130 + Shipping + 20 minutes for a PC Tech to put all this in is still less than the store, you'll be much happier!
Mitch