Replacing a CD Drive on Laptop, Help

My CDRW/DVD Drive went out on my laptop (HP-DV4000). I bought an HP replacement drive and need to install it. I am looking at the laptopt and do not know how to correctly remove the old CD drive out and get the new one in. Removing the screws on the bottom of the laptop doesnt look like it will get to it.

Any advice on how I should proceed. Either directions or a link to an online tutorial that will help me with this issue. Thanks for any help!!