Hi i have got the original "routen" file for the SD202 and i have edited it but i can seem to get it in the game right. When i import it into the model and the click the little blue arrow to change the primary texture it doesnt seem to replace the one thats there, they are both there together how do i overight the original.Hope this make sense.

You don't need to open the model at all, all you need to do is import the .tga texture that you have edited from the Import folder and it will automatically generate a .tex file. You'll find the tex file in the Game folder in the same place as you put the tga in the Import folder, so for example, if you put the .tga file in "Import\userData\textures\" the tex file will be put in "Game\userData\textures\". All you need to do then is take the tex file from where it was put and move it to "Game\userData\vehicles\[bus]\texture\", and overwrite the existing file in there if necessary.

Ok thanks very much