Rotate texture in llParticleSystem

Hi,

i am making a ParticleSystem with a texture(a ring), but the texture
moves vertical and i want to move it horizontal.
Does anyone now with command i have to use i can't find it.

thanks

I don't think that particles' texture do move.
See PSYS_SRC_ACCEL, PSYS_SRC_ANGLE_BEGIN, PSYS_SRC_ANGLE_END

i mean the texture i use is standing up and i want te texture flat.
more like horizontal smoke rings

PSYS_PART_FLAGS, 
                PSYS_PART_EMISSIVE_MASK|            //Glow
                PSYS_PART_INTERP_SCALE_MASK,    //Activated Scale
        PSYS_SRC_PATTERN, 
                PSYS_SRC_PATTERN_ANGLE_CONE,    //Cone Angle
                PSYS_SRC_ANGLE_BEGIN, -PI,           //Inner Angle
                PSYS_SRC_ANGLE_END, -PI,             //Outer Angle
        PSYS_PART_START_COLOR, <1,0,0>,         //Color RED  
        PSYS_SRC_BURST_SPEED_MIN,   0.8,        //minimal speed
        PSYS_SRC_BURST_SPEED_MAX,   0.8,        //maxiaml speed
        PSYS_SRC_TEXTURE, "JP Particle - AmberGlow",
        //PSYS_SRC_PATTERN_ANGLE,0,
        PSYS_PART_START_SCALE,< 0.1, 0.1, 0>, 
        PSYS_PART_END_SCALE,  < 4.0, 4.0, 0>,
        PSYS_SRC_BURST_PART_COUNT, 2,  
        PSYS_SRC_BURST_RATE, 3.00,  
        PSYS_PART_MAX_AGE, 5.0

Unfortunately, particle "billboards" (ie, "sprites" always face the viewer. The best you can do is pre-render some smoke rings that appear nearly horizontal on a flat vertical billboard (kinda like looking at Saturn's rings when it is significantly tilted in relation to us) to give the illusion of being partly horizontal.