HelpD3D Menu Sprite Size

I am making D3D Menu with Sprite but i don't know why my Sprite Size sometimes so small and sometimes so big.
This is what i write in ReFont :
//-----------------------when I write this,it become so small--------------------\\
if(Sprite == NULL)D3DXCreateSprite(pDevice, &Sprite);
if(MenuD == NULL)D3DXCreateTextureFromFileInMemoryEx(pDevice,& DrawSprite,48782,128,250,D3DX_DEFAULT,0,D3DFMT_UNK NOWN,D3DPOOL_MANAGED,D3DX_DEFAULT,D3DX_DEFAULT,0,N ULL,NULL,&MenuD);

//-----------------------when I write this,it become so big--------------------\\
if(Sprite == NULL)D3DXCreateSprite(pDevice, &Sprite);
if(MenuD == NULL)D3DXCreateTextureFromFileInMemoryEx(pDevice,& DrawSprite,48782,129,250,D3DX_DEFAULT,0,D3DFMT_UNK NOWN,D3DPOOL_MANAGED,D3DX_DEFAULT,D3DX_DEFAULT,0,N ULL,NULL,&MenuD);

Can anyone tell me what is the correct Size for Sprite or the correct way to write the code of Sprite.
Sorry for bad english because english is not my primary language.