Point list point sprites

Can I create an ordinary point list and expand it into triangles then project and create billboards?

Ive written a bit of code and its compiling, its just not outputing anything...

What would be the best way to go about this, and am I doing it the wrong way?

heres my disfunctioning shader, is there anything obviously wrong with it?

float3 right;
float3 up;
float voxradius;

struct vs_outputm
{
 float4 pos        : SV_POSITION;   //position using the texture coordinates
 float4 col        : TEXCOORD0;
 float4 nor        : TEXCOORD1;
};

struct ps_outputm
{
 float4 col;
};

vs_outputm vsm(float4 pos      : POSITION,
               float4 col      : DIFFUSE,
               float4 nor      : SPECULAR)
{
 vs_outputm output;
   
 output.pos=pos;
 output.col=col;
 output.nor=nor;
 
 return output;    
}

[maxvertexcount(4)]
void gsm(point vs_outputm input[1], inout TriangleStream<vs_outputm> TriStream)
{
 vs_outputm output;


 output.pos=mul(input[0].pos-right*voxradius+up*voxradius,wvp);
 output.nor=input[0].nor;
 output.col=input[0].col;
 TriStream.Append(output);
 output.pos=mul(input[0].pos+right*voxradius+up*voxradius,wvp);
 output.nor=input[0].nor;
 output.col=input[0].col;
 TriStream.Append(output);
 output.pos=mul(input[0].pos+right*voxradius-up*voxradius,wvp);
 output.nor=input[0].nor;
 output.col=input[0].col;
 TriStream.Append(output);
 //output.pos=mul(input[0].pos+right*voxradius-up*voxradius,wvp);
 //output.nor=input[0].nor;
 //output.col=input[0].col;
 //TriStream.Append(output);
 TriStream.RestartStrip();  
}

ps_outputm psm(vs_outputm vso) : SV_TARGET
{ 
 ps_outputm output;

 float3 nor;
 
 nor.x=vso.nor.r*2-1;
 nor.y=vso.nor.g*2-1;
 nor.z=vso.nor.b*2-1;

 float light=dot(-ldir,vso.nor);
 
 output.col=vso.col*light;
 output.col.a=1.0f;

 return output;
}




technique10 mapdraw
{
 pass P0
 {
  SetVertexShader(CompileShader(vs_4_0, vsm()));
  SetGeometryShader(CompileShader(gs_4_0, gsm()));
  SetPixelShader(CompileShader(ps_4_0, psm()));       
 }
}

Thanks

I got it working, the problem is i wasnt getting the w paramater right... again... thank you drive though.

Just a guess but, ever tried to invert your face verts ?
Perhaps its culling-related ?

Edit:
Dammit, too late

Cheers,
- Wernaeh