I have a Dell C400 that has an external CD-ROM Bay. Not sure if it'll work on yours. You can see what the bay and cable kind of look like in the link below. The connector on it is some sort of special connector only for Dell's I believe. If you think it'll work, you can borrow it for awhile.
http://cgi.ebay.com/Dell-Latitude-C4...3A2%7C294%3A50