Open IE > Tools > Manage Addons. That disables it. Then it should be listed under Add/Remove programs, go there to uninstall it.
An unwanted and unasked for toolbar addon as above has appeared on my I E version 8. No idea where it came from and it appears to be malware as the poorly represented map has the typical inset trying to get me to click on it. Does anyone know how to delete it as I've been unable to trace the program on my laptop. Thanks.