Check the stickied post in this thread for unfamilla's tutorials at the end of it you will have created an object in blender, textured it and have it working in game
https://forum.game-guru.com/thread/208184
PC Specs: Windows 7 home 64-bit, Amd 7900 3gb DDR5 graphics, 8gb DDR3 Ram, Intel i7 3.4ghz