how to edit the texture after model swapping

hi

okay so i just made a model swap mod of the p90 to p90tr but wat i want is the same texture as in the colors and the looks.

here is how my gun looks like right now.....
http://imageshack.us/photo/my-images...tarms00ue.jpg/
i want it to just look like the p90tr se..... so can u please tell me how i can do that

Thanks

Fix the picture link.