You can always google the model number of your hard drive, but the main factor will be what your controller supports. Both types will work in your laptop, it is just a matter of the performance being held to the lowest point. If the controller is SATA III and you put an SATA II drive in, you will have SATA II speeds. If the controller is SATA II, any drive you put in will run at SATA II speeds.
According to this link, it seems as though your controllers are limited to 3.0 Gbps, so it probabl won't matter what drive you put in. http://www.intel.com/content/www/us/...s-chipset.html