Have you tried install/uninstall again? Maybe once it's installed you can remove the image drive in the options?
TweakUI for 98 should be able to remove icons from control panel.
Have you tried searching the registry for Ahead and deleting what you find, the for Nero and deleting what you find. Not the recommended way to do it, but then maybe you can delete as directed and it won't come back.
DO NOT forget to backup the registry first.