Grr, forgot that too! Yes, SPHITSP will not work without caaling SPCOL first. I'd recommend defining SPHOME for a sprite first, then calling SPCOL CN,HX,HY,EX,EY,TRUE - where CN is the Control Number, HX and HY are the NEGATIVE SPHOME offsets, and EX and EXY are the width and height of your sprite. TRUE will adjust the collision for SPSCALE.