I'm looking to add more storage after getting an SSD in my Dell XPS M1530, and I was wondering if there was some way to add a second hard drive, maybe in place of the CD drive as I've heard is possible in some MacBooks? So, is it possible?
Yes it is possible to get a CD drive bay insert that allow a second hard drive. For example this. It should be available from other vendors - I've seen them on eBay.