Textures not showing up

okay, so I have a pretty realistic looking ak74 model that I want to use, but the only problem is that it doesn't come with any textures. I am trying to apply my own (Not that hard, right?), well I am creating separate materials for metal, wood, etc, like your supposed to, but when I tried applying my first texture to one of the metal spots, the texture came out looking like these:

http://dl.dropbox.com/u/2318787/Screen%20shot%202011-03-30%20at%208.02.28%20PM.png http://dl.dropbox.com/u/2318787/Screen%20shot%202011-03-30%20at%208.02.44%20PM.png http://dl.dropbox.com/u/2318787/Screen%20shot%202011-03-30%20at%208.02.55%20PM.png http://dl.dropbox.com/u/2318787/Screen%20shot%202011-03-30%20at%208.03.04%20PM.png

As you can see from the pictures, everything should be applied correctly, and I even show the same thing happening in Cinema4D. The same thing happens when I try to apply another texture. it just comes out the same relative color as it. If I do brick, it will turn kind of red. If I do water, it comes out kind of blue. I tried different shaders and nothing happened. It only does it on certain pieces of the model too. Sometimes it will apply just fine.

Please help! I really need it!