float4x4 projTM : WorldViewProjection;
float4x4 worldTM : World;
float4x4 worldITTM : WorldIT;
float4 eyePos : WorldEyePosition;

should translate in GStudio6 to:

matrix projTM;
matrix worldTM;
matrix worldITTM;
vector eyePos;

I believe that's right, hope it helps...
-GodLikeMouse