If you're looking for a laptop that has all the connectors and a DVD burner, you don't have that many options these days. Many Ultrabooks don't have a DVD burner, but that's not the case with the Dell Inspirion 14z.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips