I have a dell inspiron with a cd-burner. You do NOT need any drivers to make it work. It should work with any standard XP install.

Try removing and reinserting it. If it's not recognised, it's broken.

If you're looking for drivers for your Dell go to http://support.dell.com type in your assettag or model and you're directed to all the drivers/bios/manuals etc. for your model.