I need information about above two trojans, "Trojan biteverify" and "trojan desktophijack". How to fix those and what those are done to our computers. At least for one trojan it's Ok.
Thanks.

Try entering them into Google and you should get help.

Trojan.Desktophijack Also Known As: Trojan.Win32.Agent.ct [Kaspersky Lab], Trojan-Downloader.Win32.Agent.le [Kaspersky Lab], Druogna [McAfee], Downloader-YN.dll [McAfee]

Could mean you have other spyware and viruses on your computer .

Install and run firefox so that you do not get infected further you internet explorer is infected
Trojan.Desktophijack is a Trojan horse that modifies the home page and desktop settings on a compromised computer.

Scan your computer with spybot