NVidia, apt-get and libGLcore

Hello, I've a couple of (rpm) programs that, although they run OK, complain about a missing dependancy on libGLcore.so.1. These files exist as they are, I think, part of my NVidia 4496 installation. Is there a way to make the NVidia*.run installation into an rpm file so that these complaints go away? I'm trying to use apt but apt-get throws up these problems and I don't want apt to destroy my stable system by installing some unnecessary package! Geoff