Hi So I'm going to upgrade the default HDD on my laptop HP Pavilion DV6 2153.eo. There are two things that I'm not so sure of tho. 1. Can I get a SATA/III SSD HDD and throw it in the laptop <- are the SATA/III SSD HDDs backward compatible with/to SATA/II 2. What HDD should I get, it should at least be something like 180Gb but then also the price shouldn't be sky high...and then ofc I should also be able to get it here in north Europe P.S. I'm also going to get more ram...is there anything else that can be upgraded..?