No textures on airplanes

Hello,

i have a problem with the downloaded airplanes. I can use the airplanes in the simulator but the airplanes have no textures. What am I doing wrong?

Thanks for your help

My System:

ATI 5700 1GB Vram
QuadCore i920 with 12GB Ram
Win 7x64

Uncheck the DX10 box in the Sims settings, I think it's the graphics tab.

thank you. Thats the resulution