UV / Texture Tile

[Shaezbreizh]

Yop,
Well, i've rescaled an object with zmodeler, but the texture tile don't suit anymore the new size ( texture is stretched),
I've changed the texture tile in material option but it only work on zmodeler and once IG the UV is reseted and is still the initial one so the texture look pretty weird from close ;S

Anyone could make a tutorial or just explain me how to set his own value for Unit per Vertex of a texture and get it working IG ?

hope some one can help me on this cause it could be a really good plus for mapper