the 404 sign

I know i sound desperate and lame but Im making a well made machinima that Uses the the 404 podcast studio and I am having A shit load of trouble with custom texturing in hammer. Can anyone please Create a square sign with this texture.

studio-

sign-

I will give you credit in the video and forever will be grateful. Its the last thing i need in my map to be finished and iv spent 5 hours researching and figuring out custom textures in hammer, and iv gone blank. It just wont let me use it.