It should work just fine, the SATA interface is fully backwards compatible! SSD's are the only drives that actually max out SATA 2 so even if your laptop only has SATA 2 it is going to be faster than a HDD and well worth it.
yes, thanks. I know that even a SATA 2 supported MB will offer better performance, I guess if I knew the MB chipset, I would know the specs for the SATA interface. I just hope these Laptop manufacturers arent offering SATA 1 supported MBs, which would bottleneck the computer. My fear is you get what you pay for unless you go with Apple Mac Pro or Dell Alienware at a much greater cost.