You need a SATA hard drive. So you'll need this one.http://www.span.com/catalog/product_...oducts_id=5263
The hard drive is fairly easy to change out. First you'll need to create recovery CD/DVDs. After that you can swap out the hard drive. The info I've seen on the hard drive swap leaves a lot to be desired. Here's my run down.
1. Create a restore CD/DVD
2. Power down the SZ. Remove the battery and the power cable.
3. Remove the single deep recessed screw that is just to the left of the docking connector.
4. Remove the three screws that are along the bottom front edge.
5. Take a credit card or something similar and push back the black plastic retaining springs that are located above the F1-F2 and Insert keys. You have to wedge the card in-between the spring and the keyboard. You have to gently (GENTLY) pull the keyboard up at the same time. You have to pull gently or you'll risk bending your keyboard. If you bend it it won't fit right and may flex on you. Do both retaining springs. The keyboard should hinge forward. Move it out of the way enough to get to the three stainless screws which hold the palm rest on.
6. Remove the three palmrest screws. Then slide the palmrest forward and then sit it out of the way on top of the keyboard.
7. Now you'll see the hard drive on the bottom left side. Remove the three screws which hold down the hard drive.
8. You should see two ribbon cables and connectors just above the top right of the hard drive. Gently pry the tape that connects the left cable to the right cable. It's a fabric type tape. A hobby knife works well here (don't cut it just use the edge to pry up a corner).
9. Pop off the left connector from the motherboard.
**This is the delicate part (step 10)**
10. The hard drive shock sensor (accelerometer) is mounted in between the right connector and the motherboard. It is adheared to the motherboard with a piece of double sided foam tape. You need to to pry the tape from the motherboard (not the sensor from the tape). It's not hard just use something to pry up one corner and then work your way back. IF YOU PULL ON THE CONNECTOR WITH THE SENSOR STILL STUCK TO THE MOTHERBOARD YOU MAY DESTROY THE SENSOR. YOU HAVE BEEN WARNED!!!
11. With the sensor free of the motherboard go ahead and disconnect the right connector from the motherboard.
12. Remove the hard drive.
13. Remove the hard drive attachment hardware (attached with two screws per side) one side at a time. In other words take off one side then attach it to the new drive. Then do the other side. That way you won't get confused on how it's mounted. Don't forget to swap the plastic insulator and the drive cable.
14. Slide the hard drive back into the machine.
15. Reverse the steps above. Make sure you give the right connector a little press to reseat the sensor.
16. Press the power button and then the CD eject button. Insert your recovery DVD #1.
17. Follow the onscreen directions to reinstall Windows/Apps.