In Applications, drag the IE icon to the trash. Then drag the icon out of the Dock.
Do you come from Windows? Because here in Macland, we don't do stuff quite the same. We know that all we have to do to clean up after ourselves is to put our mess in the Trash, rather than running some complicated Uninstall method involving the ilk of custodians, maids, vacuums, etc. We also treat our new members with a great deal of respect. Welcome to Macland, Jill! We hope you enjoy your stay.