Parts-People.com is a family owned business that was started back in 2002. They have a shop in Austin, TX and a web site that specializes in Dell laptop repair and parts replacement supplies. You can send them your laptop for repair, or if you are a DIY kinda of person, you can purchase the parts and perform the repairs on your own. They sell parts that range from motherboards, bezels and AC adapters, all the way down to screws for a large variety of Dell branded laptops (including Alienware laptops).
Check out their Facebook page where they run contests (they are currently giving away a laptop) and provide additional info about their services.
For the do-it-yourself Dell owner, they even offer a YouTube Channel that has over 200 tutorial videos that show you step by step how to perform many different types of laptop repairs. The videos are easy to understand and include all the info you need to perform the repairs from start to finish, including the list of needed tools. Each video also has a link to the full written instructions for each repair as well.