Texturing Cars,Vans,Campers etc in Blender

[BoomBaby]

So im trying to Texture Things like cars and vans in blender, but when i try to texture them and export them, they will show up ingame white(or atleast im asuming since when i export it i got tons of errors about cruscarblue.png etc). So obvioulsy im not doing this right. What im doing is selecting a car and going to edit mode in it, then opening an image in the UV map image editor thing such as crushcarwhite.png. and wala. The crushcar will be mapped out to fit the .png image. But i guess im not doing this right...

[Stephen Hopkins]

make sure to export the object as a game engine material. You need to click this box during exporting for it to work and show up textured.

[BoomBaby]

I do everytime and the samething happens. I get all of those errors