Logos here http://www.brandsoftheworld.com/
You can either make an xpack of textures or you can just use the materials editor to bring the images into btb. I recommend to just use the materials editor.
You need the textures in dds format, I reccomend to not make the file too big and just use dxt1 with no alpha, make them no bigger than 256x256. They might look blurry and pixelated in btb but in game they are enhanced and will look better.
Someone should have told me this in the other thread - where i requested an xpack. Now i have my start finish line in the pavement and my tower sign. The import material worked fantastic. Thanks so much.