HijackThis examines certain key areas of the Registry and Hard Drive and lists their contents. These are areas which are used by both legitimate programmers and hijackers. It's up to you to decide what should be removed. Some items are perfectly fine. You should not remove them. Never remove everything. Doing that could leave you with missing items needed to run legitimate programs and add-ins. This Page will help you work with the Experts to clean up your system.