You do realize that...
taking apart a laptop and replacing parts is no joke? Most of the time something like RAM or HDD is easy to replace, but other things can be very tough to replace. Have you replaced screen for your laptop before?
The site that I recommend that you check out is ifixit. The information you really need for screen replacement is usually on back of the LCD panel. I recommend you look at guides like this
http://computershopper.com/laptops/howto/replace-your-laptop-screen. (
Don't just read one, read multiple)
DDR2 doesn't really tell me much other than DDR2. There are different speeds of DDR2 out there. Which one? One way you can tell is to look at the RAM that is currently on your laptop.
Your link doesn't really show much other than newegg's search options.