I just got my decal skin today and applied it to my laptop. It's like a vinyl skin sticker. It's pretty thick and durable so you can wipe it off to clean it. Plus you can remove it in the future without any damage.
The one I ordered for my Dell Inspiron 1545 was $12.99 plus shipping, can't beat that! (Tip: Their ebay store has cheaper prices! That's where I ordered from.) Their official website is called: Decalskin.com. I think I'm going to order one for my blackberry sometime soon too!
Here's my laptop with the new skin (ignore the junk in the background!)
And no- I'm not getting paid for this post! I just really recommend these skins, it looks awesome on my laptop! And if I get bored I can always order another style. My Mom already said she might want one for her laptop for Xmas. :)