Searchex is a dangerous hijacker program.  Searchex will take vital information that you type into the computer to its controlling site (searchex.com).  It is installed onto your computer as an Internet Explorer Browser Helper Object.  This malware will redirect homepages, gather personal information and hijack your searches, as well.
Searchex is something that should be removed from your computer as soon as possible.  It is software that will compromise the health of your computer.  It is also a danger to have your personal information in the hands of others who intend to do ill with the information.  There is an anti-spyware system out there that can remove this malware quickly and effectively.  It is called a SpyZooka.  It has been on the market for several years and is trusted by many satisfied customers and the Better Business Bureau.