few questions

1 how do i use textures in game engine
if i aply one i see default color.

2 how do i use normal maps
if i aply one the object is fully black.

3how do i use particles

hod do i use modefiers i want a softbody and a subsurf modefier but i donth want lagging

hope you can answer me:yes:
i work with 2.5

Try this tutorial for normal maps: (it should include regular textures as well)

http://www.tutorialsforblender3d.com/GameDoc/NormalMaps-glsl/NormalMaps-GLSL_1.html

ow thx but i work with 2.53 and i donth see those buttons