空气的粘度:急急急~~高手请进!谢谢啦

我也知道可能是有病毒木马.或是被入侵什么的.我在网上查过的.请教不重装的办法. 请大家说详细点,谢谢啦
请大家帮个忙,我先谢谢了.我的电脑怎么突然弹出这样一个网页
C:\Documents and Settings\zhangfuyuan\桌面\32721984.htm
并复制到了桌面上.这是怎么会事啊?谁能教我解决方法.并告诉我怎样就算解决了.答得好的我再另外加分.谢谢啦.
网页里内容如下:
Alarm!
Your system is in danger!
The cFos consistency check has detected, that one or more components have been modified.

Thereby Viruses, Trojan Horses, Backdoor Programs, Spy-Ware, etc. could have sneaked into your System. Also costly dialer programs may have been installed.

Your system is exposed to the following risks:
Viruses and Worms spread either confidential documents on the internet, delete your hard disk or damage your PC.
Trojan Horses and Backdoor Programs allow others access into your PC and transmit confidential data, e.g. passwords, banking/financial information, etc.
Dialer Programs cause great costs for internet access.
The danger of Viruses, Trojan Horses and Backdoor and Spy Programs especially leads from the software piracy scene and is often found in Cracks of commercial programs. Nothing prevents a cracker from modifying the software to his advantage.
Therefore please check your system and install at least an unmodified driver from www.cfos.de. You can test it for 45 days free of charge.