Lop is installed in several ways:
drive by:
prevention http://www.javacoolsoftware.com/spywareblaster.html
bundled in other software i.e. Messenger Plus:
prevention
read during install before clicking
http://www.wilderssecurity.net/spywareguard.html
General: And read this on how to prevent future infections:
http://www.net-integration.net/cgi-bin/for...=ST;f=38;t=3051HTH,
Pieter