Tried Google? Something like "e greetings remove" or "e greetings uninstall"?

After that, even though IE8 may be the safest IE overall, that's still really not saying much given how insecure IE is. Just as an example, IE is the only browser that can be hijacked in the fashion you are experiencing. IE is also the ONLY browser with ANY kind of malware issue period. You would be much behooved to find an alternative, and there are certainly plenty to choose from: Firefox, Chrome, Safari, and Opera round out the top 4. Some of the secondary players would be Seamonkey and Flock, which are basically variations on Firefox.