There are 2 fx files;
(I have opened them in Wordpad)

mtl_multitex.fx

Code:

---

TEXTURE entSkin1; //Blendmap1
TEXTURE entSkin2; //Blendmap1
TEXTURE entSkin3; //Blendmap1
TEXTURE entSkin4; //Shadowmap

TEXTURE mtlSkin1;
TEXTURE mtlSkin2;
TEXTURE mtlSkin3;
TEXTURE mtlSkin4;

matrix matMtl;
vector mtlSkill1;

technique ffp_terrain_tex
{
	
	pass P0
	//////////////////////////////////////////////////////
	//// Lets lay the first TEXTURE down.  no alpha work
	//// This will tile across the entire HMP
	//////////////////////////////////////////////////////
	{
		
		alphablendenable=false;
		alphatestenable=false;
		//zenable=true;
		//zwriteenable=true;
		
		////////////////////////////////////////
		// Stage 0
		///////////////////////////////////////

		TEXTURE[0] = <mtlSkin4>;	

		magFilter[0]=linear;
		minFilter[0]=linear;
		mipFilter[0]=linear;
		
		zenable=true;
		zwriteenable=true;

		magFilter[0]=linear;
		minFilter[0]=linear;
		mipFilter[0]=linear;
		
		
		TEXTURETransformFlags[0] = Count2;
		TextureTransform[0]=<matMtl>;
		texcoordindex[0]=1;

		COLORARG1[0] = TEXTURE; 
		ColorOp[0] = MODULATE;
		ALPHAARG1[0] = CURRENT | ALPHAREPLICATE;
		alphaop[0]=disable;
		
		//////////////////////////////////////
		//stage 1
		//////////////////////////////////////

		colorop[1]=disable;
		alphaop[1]=disable;
		
	}

	pass P1
	//////////////////////////////////////////////////////
	//// Now we blend another TEXTURE using an alphamap
	//// This TEXTURE will be blended
	//////////////////////////////////////////////////////
	{
		
		//////////////////////////////////////
		// Stage 0 - Setup the alphamap
		//////////////////////////////////////            		

		// We need to enable alphablending 
		alphablendenable=true;
		srcblend=srcalpha;
		destblend=invsrcalpha;
		
		// AlphaTestEnable uses the AlphaRef and AlphaFunc to 
		// determine which pixels get drawn.
		// In this case, anything greater that 0 will be drawn.
		alphatestenable=true;
		alpharef=0x00000000;      	//Reference Value
		alphafunc=Greater;  	  	//Comparison Function
		
		TEXTURE[0] = <entSkin1>;

		magFilter[0]=linear;
		minFilter[0]=linear;
		mipFilter[0]=linear;
		
		//
		// We don't want the alphamap to tile
		//
		TEXTURETransformFlags[0] = disable;
		
		texcoordindex[0]=0;	
		
		COLORARG1[0] = CURRENT; 
		ColorOp[0] = SELECTARG1;
		ALPHAARG1[0] = TEXTURE | ALPHAREPLICATE;
		alphaop[0]=selectarg1;

		//////////////////////////////////////////////
		// Stage 1 -- This is the TEXTURE to splat
		//////////////////////////////////////////////

		TEXTURE[1] = <mtlSkin1>;
		

		// Zenable is supposed to default to true.  
		// This enables depth testing to determine what pixels 
		// are visible to the viewer
		
		//zenable=true;
		//zwriteenable=true;

		magFilter[1]=linear;
		minFilter[1]=linear;
		mipFilter[1]=linear;
		
		
		TEXTURETransformFlags[1] = Count2;
		TextureTransform[1]=<matMtl>;
		texcoordindex[1]=1;

		COLORARG1[1] = TEXTURE; 
		ColorOp[1] = MODULATE;
		ALPHAARG1[1] = CURRENT | ALPHAREPLICATE;
		alphaop[1]=disable;
		
		///////////////////////////////////////////////
		// Stage 2
		///////////////////////////////////////////////
		colorop[2]=disable;
		alphaop[2]=disable;
		
		
	}

	pass P2
	////////////////////////////////////////////////////
	//// A ditto of Pass p1 but with different a different
	//// TEXTURE and alphamap
	///////////////////////////////////////////////////
	{
		
		////////////////////////////////////////
		// Stage 0
		////////////////////////////////////////

		alphablendenable=true;
		srcblend=srcalpha;
		destblend=invsrcalpha;
		alphatestenable=true;
		alpharef=0x00000000;      
		alphafunc=Greater;  	 
		
		TEXTURE[0] = <entSkin2>;
		
		magFilter[0]=linear;
		minFilter[0]=linear;
		mipFilter[0]=linear;
		
		
		TEXTURETransformFlags[0] = disable;
		
		texcoordindex[0]=0;
		
		COLORARG1[0] = CURRENT; 
		ColorOp[0] = selectarg1;
		ALPHAARG1[0] = TEXTURE | ALPHAREPLICATE;
		alphaop[0]=selectarg1;

		/////////////////////////////////////////
		// Stage 1
		/////////////////////////////////////////
		TEXTURE[1] = <mtlSkin2>;

		//zenable=true;
		//zwriteenable=true;
		
		magFilter[1]=linear;
		minFilter[1]=linear;
		mipFilter[1]=linear;
		
		
		TEXTURETransformFlags[1] = Count2;
		TextureTransform[1]=<matMtl>;
		texcoordindex[1]=1;

		COLORARG1[1] = TEXTURE; 
		ColorOp[1] = modulate;
		ALPHAARG1[1] = CURRENT | ALPHAREPLICATE;
		alphaop[1]=disable;
		
		////////////////////////////////////////
		// Stage 2
		////////////////////////////////////////
		colorop[2]=disable;
		alphaop[2]=disable;

	} // End of Pass P2


	pass P3
	////////////////////////////////////////////////////
	//// A ditto of Pass p1 but with different a different
	//// TEXTURE and alphamap
	///////////////////////////////////////////////////
	{
		
		////////////////////////////////////////
		// Stage 0
		////////////////////////////////////////

		alphablendenable=true;
		srcblend=srcalpha;
		destblend=invsrcalpha;
		alphatestenable=true;
		alpharef=0x00000000;      
		alphafunc=Greater;  	 
		
		TEXTURE[0] = <entSkin3>;
		
		magFilter[0]=linear;
		minFilter[0]=linear;
		mipFilter[0]=linear;
		
		
		TEXTURETransformFlags[0] = disable;
		
		texcoordindex[0]=1;
		
		COLORARG1[0] = CURRENT; 
		ColorOp[0] = selectarg1;
		ALPHAARG1[0] = TEXTURE | ALPHAREPLICATE;
		alphaop[0]=selectarg1;

		/////////////////////////////////////////
		// Stage 1
		/////////////////////////////////////////
		TEXTURE[1] = <mtlSkin3>;

		//zenable=true;
		//zwriteenable=true;
		
		magFilter[1]=linear;
		minFilter[1]=linear;
		mipFilter[1]=linear;
		
		
		TEXTURETransformFlags[1] = Count2;
		TextureTransform[1]=<matMtl>;
		texcoordindex[1]=0;

		COLORARG1[1] = TEXTURE; 
		ColorOp[1] = modulate;
		ALPHAARG1[1] = CURRENT | ALPHAREPLICATE;
		alphaop[1]=disable;
		
		////////////////////////////////////////
		// Stage 2
		////////////////////////////////////////
		colorop[2]=disable;
		alphaop[2]=disable;

	} // End of Pass P3		
	
	pass p4
	{			
		alphablendenable=true;			
		srcblend=zero; 			
		destblend=srccolor; 			
		//zenable=true;			
		//		zwriteenable=true;			
		ditherenable=true;					
		COLORARG1[0] = DIFFUSE;             		
		ColorOp[0] = Modulate2x;            		
		ColorArg2[0] = Current;				
		alphaop[0]=disable;
		
		Texture[1] = <entSkin4>;
		magFilter[1]=linear;
		minFilter[1]=linear;
		mipFilter[1]=linear;
		COLORARG1[1] = TEXTURE; 
		ColorOp[1] = Modulate2x;
		TexCoordIndex[1]=0;
		TextureTransformFlags[1]=Count2;
		TextureTransform[1]=
		{
			1.0,0.0,0.0,0.0,
			0.0,1.0,0.0,0.0,
			0.0,0.0,0.0,0.0,
			0.0,0.0,0.0,0.0
		};
	}
} // End of Technique

---

and mtl_multitex_lod.fx

Code:

---

TEXTURE entSkin1; //Shadowmap

technique ffp_terrain_tex
{
	pass p0
	{				
		
		Texture[0] = <entSkin1>;
		ColorOp[0] = Modulate2x;
		zenable=true;			
		zwriteenable=true;
	}
} // End of Technique

---

In what program can you change these files?

Regards,
Frits