With IE running, select Tools>Internet Options. (You can also get here from the "Start" button, Control Panel, and Internet Options.) Click the "Security" tab; highlight the Internet icon (normally the one with the glove); click Custom Level. In the "Settings" box, scroll to the section titled "Scripting". (You may have to scroll waayyy down.) Under "Active Scripting", click on Enable. Click OK (to close "Security Settings"), and OK to close "Internet Options". If you did this from within Internet Explorer, it's best to close and relaunch it.