電腦中了毒 點解救

go to Symantec 's website(www.symantec.com), and search your trojan horse name

you will find the following link below

http://www.symantec.com/security_response/writeup.jsp?docid=2006-071010-2417-99

Click removal tool, there will teach you how to remove it.

2008-03-11 10:12:31 補充：
Here is the information from Symantec

Discovered: July 10, 2006
Updated: February 13, 2007 12:57:36 PM
Type: Trojan Horse
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

2008-03-11 10:13:12 補充：
Backdoor.Pcclient.B is a back door Trojan horse program with rootkit functionality that allows a remote attacker unauthorized access to the compromised computer.

It has been reported that Backdoor.Pcclient.B is dropped by Trojan.Mdropper.K.

okay Now I know what kind of 知識長 Benny is
Not answering to the question, to the point, to give solution
BUT just blindly copying the standard answer (tell people to prevent)
instead of HOW to FIX the problem.