Can someone make me a skin please?

I want this skin without the round corners

Just a solid black long rectangle will do...I tryed to follow the tutorial but I cant get it to work, I repainted it rectangle but it still has round corners. Its really pissing me off now.

[FROM THE TUTORIAL]

"This is also a huge thing I recommend you do. Because the filename HAS to be manually changed, you can take anyone else’s skin that they’ve made, rename it from a .wmz extension back to a .zip extension, unzip the file to a directory,"

I did that, but it just opens in WMP, it doesnt unzip



This is the skin I want.

http://customize.org/wmp/skins/36867/download